Hair dryer and detachable part

Abstract

The embodiment of the present application provides a hair dryer and a detachable part, the hair dryer comprising: a main body, the main body comprising a shell, the shell having a first air inlet and a first air outlet; a first connecting part, the first connecting part is arranged at the first air outlet, and the first connecting part is used to be magnetically connected to the detachable part. The technical solution provided by the embodiment of the present application, when disassembling and assembling the detachable part on the main body, only the magnetic force needs to be overcome, and no other operations are required, so that the disassembly and assembly process is very convenient and fast, so that the user can freely switch the detachable parts with different functions.

Description

Technical Field

[0001] The present application relates to the field of mechanical technology, and in particular to a hair dryer and a detachable part. Background Art

[0002] A hair dryer is a small household appliance that is often used in people's daily lives. It is generally composed of a hair dryer body and a nozzle. The airflow generated by the hair dryer body can be discharged through the nozzle for users to use.

[0003] However, in the hair dryers currently used, the air nozzle is generally directly fixed on the hair dryer body, or the two are connected by a buckle. The currently used connection method has certain defects. For example, in the case of fixed connection, the air nozzles with different functions cannot be replaced. In the case of the buckle connection, it is very cumbersome to use, and the position of the locking part of the buckle needs to be aligned to achieve locking. Moreover, the locking part of the buckle is easy to wear, resulting in the occurrence of situations such as inadequate assembly, which makes the fixing effect worse and worse, and the locking effect is not very ideal. Summary of the invention

[0004] In view of the above problems, the present application is proposed to provide a hair dryer and a detachable part that solve the above problems.

[0005] In one embodiment of the present application, a hair dryer is provided, comprising:

[0006] A main body, the main body comprising a shell, the shell having a first air inlet and a first air outlet;

[0007] A first connecting member, wherein the first connecting member is arranged at the first air outlet, and the first connecting member is used for magnetic connection with the detachable member.

[0008] Accordingly, in another embodiment of the present application, a detachable member is provided, comprising:

[0009] A detachable body having a second air inlet and a second air outlet

[0010] The second connecting member is arranged at the second air inlet, and the second connecting member is used to be magnetically connected to the main body to penetrate the second air inlet and the first air outlet of the main body.

[0011] In addition, in another embodiment of the present application, a hair dryer is provided, comprising:

[0012] A main body, the main body comprising a shell, the shell having a first air inlet and a first air outlet, and a first connecting member is provided at the first air outlet;

[0013] A detachable body, wherein the detachable body has a second air inlet and a second air outlet, and a second connecting member is disposed at the second air inlet;

[0014] The second connecting member is magnetically connected to the first connecting member to connect the detachable body to the main body and penetrate the second air inlet and the first air outlet.

[0015] The technical solution provided by the embodiment of the present application can be connected to the detachable part through the first connecting part, and the detachable part includes but is not limited to the air nozzle. When the detachable part is disassembled and assembled on the main body, it is only necessary to overcome the magnetic force, and no other operation is required. The first connecting part and the detachable part are connected magnetically, so that the first connecting part is not easy to wear, and the first connecting part and the detachable part can be automatically connected after the positions are aligned, so that the disassembly and assembly process of the detachable part is very convenient and fast, the installation process is accurate, the installation effect is good, and it is convenient for users to replace detachable parts with different functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of a cross-sectional exploded structure of a hair dryer provided in one embodiment of the present application;

[0018] Figure 2 A schematic cross-sectional view of a hair dryer provided in one embodiment of the present application;

[0019] Figure 3 A schematic diagram of the structure of the main body provided in one embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of a first positioning member provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the structure of a second positioning member provided in one embodiment of the present application;

[0022] Figure 6 A schematic structural diagram of a first connecting member provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the cross-sectional structure of a tuyere provided in one embodiment of the present application;

[0024] Figure 8 A schematic cross-sectional view of a hair dryer provided in one embodiment of the present application;

[0025] Fig. 9 A circuit diagram of a hair dryer provided in one embodiment of the present application;

[0026] Fig.10 A bottom view schematic diagram of the structure of a hair dryer provided in one embodiment of the present application;

[0027] Fig.11 A schematic diagram of the front view of the hair dryer provided in one embodiment of the present application;

[0028] Fig.12 A schematic front view of the structure of a hair dryer provided by an embodiment of the present application in another state;

[0029] Fig.13 It is a schematic diagram of the internal structure of a hair dryer in the prior art;

[0030] Fig.14a A cross-sectional schematic diagram of a hair dryer body provided in one embodiment of the present application;

[0031] Fig.14b A three-dimensional schematic diagram of a hair dryer body provided in one embodiment of the present application;

[0032] Fig.15 A schematic diagram of the structure of a heating component in a hair dryer provided in an embodiment of the present application;

[0033] Fig.16 A schematic diagram of a flow guide structure provided on a fan assembly in a hair dryer provided in an embodiment of the present application;

[0034] Fig.17 A cross-sectional schematic diagram of a hair dryer provided in one embodiment of the present application;

[0035] Fig.18 An exploded schematic diagram of the assembly of a silencer assembly in a hair dryer provided in one embodiment of the present application;

[0036] Fig.19 A side view of a hair dryer provided in one embodiment of the present application;

[0037] Fig. 20 A rear view of a hair dryer provided in one embodiment of the present application;

[0038] Fig.21 An axonometric diagram of a hair dryer provided in one embodiment of the present application;

[0039] Fig. 22 An exploded schematic diagram of the assembly of exposed components and an air inlet grille in a hair dryer provided in one embodiment of the present application;

[0040] Fig.23A schematic diagram of the internal structure of a hair dryer provided in one embodiment of the present application;

[0041] Fig.24 for Fig.23 A partial enlarged schematic diagram of

[0042] Fig.25 A schematic diagram of the structure of a hair dryer provided in one embodiment of the present application;

[0043] Fig.26 A schematic cross-sectional structure diagram of a main body provided in an embodiment of the present application;

[0044] Fig. 27 for Fig.26 The enlarged schematic diagram of point A in the middle;

[0045] Fig.28 A schematic diagram of the exploded structure of a hair dryer provided in one embodiment of the present application;

[0046] Fig.29 A schematic diagram of the structure of the front side of a light guide provided by an embodiment of the present application;

[0047] Fig.30 A schematic diagram of the back structure of a light guide provided in an embodiment of the present application

[0048] Fig.31 A schematic diagram of the internal structure of a handle of a hair dryer provided in one embodiment of the present application;

[0049] Fig.32 A control schematic diagram of a hair dryer provided in an embodiment of the present application;

[0050] Fig.33 A schematic diagram of the exploded structure of a hair dryer provided in one embodiment of the present application;

[0051] Fig.34 A schematic diagram of the planar structure of a front cover provided in an embodiment of the present application;

[0052] Fig.35 A schematic diagram of the three-dimensional structure of a front cover plate provided in an embodiment of the present application;

[0053] Fig.36 A schematic diagram of the structure after the front cover plate and the air inlet grille are aligned according to an embodiment of the present application;

[0054] Fig.37 A schematic diagram of the exploded structure of the exposed components provided in one embodiment of the present application;

[0055] Fig.38 A schematic structural diagram of an air inlet grille provided in another embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0057] In some processes described in the specification, claims and the above-mentioned figures of this application, multiple operations that appear in a specific order are included, and these operations may not be performed in the order in which they appear in this document or may be performed in parallel. In addition, these processes may include more or fewer operations, and these operations may be performed in sequence or in parallel. It should be noted that the descriptions of "first", "second", etc. in this document are used to distinguish different messages, devices, modules, etc., and do not represent the order of precedence, nor do they limit "first" and "second" to be different types.

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0059] In the prior art, the air nozzle of the hair dryer is generally fixed directly on the hair dryer body, or the two are connected by a buckle. In the case of fixed connection, the air nozzles with different functions cannot be replaced. In the case of buckle connection, it is very cumbersome to use, and the position of the locking part of the buckle needs to be aligned to achieve locking. Moreover, the locking part of the buckle is easy to wear, resulting in the occurrence of inadequate assembly and the like, making the fixing effect worse and worse, and the locking effect is not very ideal.

[0060] In view of the above problems, the present application provides the following embodiments, a hair dryer and a detachable part, so that the disassembly and assembly process of the detachable part is very convenient and fast, and the installation process is accurate.

[0061] Figure 1 This is a schematic diagram of a cross-sectional exploded structure of a hair dryer provided in one embodiment of the present application. Figure 2 A schematic cross-sectional view of a hair dryer provided in one embodiment of the present application is shown in FIG. Figure 1 and Figure 2 shown.

[0062] In one embodiment of the present application, a hair dryer is provided, comprising a main body 10 and a first connecting member 13. The main body 10 comprises a shell, and the shell has a first air inlet 11 and a first air outlet 12. The first connecting member 13 is arranged at the first air outlet 12, and the first connecting member 13 is used to be magnetically connected to the detachable member.

[0063] The technical solution provided by the embodiment of the present application is that the main body 10 is magnetically connected to the detachable part through the first connecting member 13. When the detachable part is installed and removed from the main body 10, it is only necessary to overcome the magnetic force between the first connecting member 13 and the detachable part, and no other operation is required. The first connecting member 13 and the detachable part are connected magnetically, so that the first connecting member 13 is not easy to wear, and the first connecting member 13 and the detachable part can be automatically connected after the position is aligned, so that the disassembly and assembly process of the detachable part is very convenient and fast, the installation process is accurate, the installation effect is good, and it is convenient for users to replace detachable parts with different functions.

[0064] It should be noted that, in this embodiment, the detachable part includes but is not limited to a nozzle. The detachable part may be magnetically connected to the first connecting part 13, or the detachable part includes a detachable body 20 and a second connecting part 21 disposed on the detachable body 20. The second connecting part 21 is magnetically connected to the first connecting part 13. The hair dryer may be as follows: Figure 1 and Figure 2 The handheld hair dryer shown in the figure may also include but is not limited to a self-propelled cleaning robot with a blowing function, a car-mounted vacuum cleaner, an air purifier, etc. Accordingly, the main body 10 may be as follows Figure 1 and Figure 2 The main body of the handheld hair dryer shown in the figure may also include, but is not limited to, the main body of a self-propelled cleaning robot, the main body of a vehicle-mounted vacuum cleaner, the main body of an air purifier, etc., which is not specifically limited in the embodiments of the present application. The hair dryer described in the above and following embodiments is described by taking a handheld hair dryer as an example, which does not constitute an improper limitation of the embodiments of the present application.

[0065] In one possible embodiment of the present application, see Figure 1, one possible implementation of the main body 10 in the embodiment of the present application is that the main body 10 includes a shell, various functional components of the hair dryer are arranged in the cavity of the shell, and a first air inlet 11 and a first air outlet 12 are arranged on the shell. The shell extends roughly in the longitudinal direction, the first air inlet 11 is located at the front end of the shell, and the first air outlet 12 is located at the rear end of the shell. The first air inlet 11 and the first air outlet 12 are located on the same horizontal plane, and such a design can reduce the loss on the air flow path. The components arranged inside the shell include but are not limited to a controller component and a heating component 50 connected to the controller component, a fan component 60, etc. Relative to the first air inlet 11 and the first air outlet 12, the fan component 60 is closer to the first air inlet 11, and the heating component 50 is closer to the first air outlet 12. The fan component 60 includes a motor for driving a fan and a fan that rotates to generate negative pressure. The fan component is configured to form a negative pressure when working to suck air from the first air inlet 11 into the main body 10, and blow it out from the first air outlet 12 after being heated by the heating component 50. The main body 10 also includes a handle 40, through which the user can hold the hair dryer for blowing. The handle 40 is provided with a control button connected to the controller assembly, and the hair dryer can be controlled to perform different functions by using the control button, for example, the hair dryer can be controlled to blow out wind of different sizes. A battery assembly is also provided in the handle 40, and the battery assembly is connected to the controller assembly. The battery assembly is configured to provide power to other components, or the power cord of the hair dryer passes through the handle 40 and is connected to the controller assembly, and the power cord is connected to an external power supply to provide power to other components. In this embodiment, a feasible way is that the extension direction of the handle 40 is perpendicular to the extension direction of the shell. And one end of the handle 40 is connected to the middle section between the front and rear ends of the shell, so that the entire main body 10 is a T-shaped structure.

[0066] See also Figure 1 , Figure 1 The arrow in the figure represents a feasible flow path of the airflow of the hair dryer. When the hair dryer is working, the airflow is sucked in by the first air inlet 11, passes through the fan assembly 60, the heating assembly 50 and other components, passes through the first air outlet 12 of the main body 10, and is discharged through the detachable part.

[0067] In the embodiment of the present application, the first connecting member 13 includes but is not limited to a magnet, an iron sheet or other parts made of a magnetically conductive material. When the first connecting member 13 is a magnet, the detachable part can be made of an iron material, or the second connecting member 21 on the detachable body 20 includes but is not limited to a magnet, an iron sheet or other parts made of a magnetically conductive material. When the first connecting member 13 is an iron sheet or other parts made of a magnetically conductive material, the second connecting member 21 is a magnet.

[0068] Furthermore, in order to facilitate users to freely adjust the air outlet angle of the detachable part, in the embodiment of the present application, the shape of the first connecting part 13 can be set to a ring structure. After the detachable part is connected to the first connecting part 13, the detachable part can be rotated arbitrarily along the plane where the first connecting part 13 is located, thereby adjusting the air outlet angle of the detachable part.

[0069] See also Figure 3 In an achievable embodiment of the present application, the first air outlet 12 is an annular structure, and the first connecting member 13 is arranged radially inwardly of the annular structure. The first air outlet of the annular structure can make the blowing range of the air outlet larger, thereby improving the blowing effect of the air outlet. The first connecting member 13 is arranged radially inwardly of the annular structure, so that the first connecting member 13 will not affect the air outlet of the first air outlet 12 while magnetically connecting the detachable part.

[0070] In order to better fix the first connecting member 13, in an achievable embodiment of the present application, see Figure 3 , the hair dryer also includes a positioning structure 30. The positioning structure 30 is located radially inside the first air outlet 12, and the positioning structure 30 is connected to the shell through a plurality of connecting ribs 31. There is a gap between the positioning structure 30 and the shell, and the gap forms the first air outlet 12 of the annular structure. The first connecting member 13 is connected and fixed to the positioning structure 30. One achievable way is that the positioning structure 30, the connecting ribs 31 and the shell are an integrally formed structure, the positioning structure 30 has a recessed portion recessed into the inside of the shell, and the first connecting member 13 is arranged in the recessed portion. The recessed portion is located radially inside the first air outlet 12 of the annular structure, and the first air outlet 12 is surrounded by the periphery of the positioning structure 30. The first connecting member 13 is located in the recessed portion, and the bottom of the recessed portion is used to connect the first connecting member 13. The detachable member can be inserted into the recessed portion and magnetically connected to the first connecting member 13 through the second connecting member 21.

[0071] Continue to see Figure 3In order to better fix the first connector 13, a matching structure connected to the first connector 13 is provided in the recessed portion. The first connector 13 is located in the recessed portion and fixed on the matching structure. In the embodiment of the present application, one achievable method is that the matching structure can be a bearing platform, and the first connector 13 is fixedly connected to the bearing platform. Another achievable method is that the matching structure is a first step structure 3221. In order to further facilitate the installation of the first connector 13 and define the position of the first connector 13, a second step structure 131 used in conjunction with the first step structure 3221 is provided on the first connector 13. The first step structure 3221 is snap-fitted with the second step structure 131. The position of the second connector 21 can be defined by the first step structure 3221 and the second step structure 131, which effectively prevents the first connector 13 from being misplaced during installation. At the same time, during installation, there is no need to deliberately align the installation position of the first connector 13 and the bearing platform, which facilitates the installation of the first connector 13.

[0072] Continue to see Figure 3 One possible implementation of the positioning structure 30 is that the positioning structure 30 includes a first positioning member 32 and a second positioning member 33. The first positioning member 32 has a recessed portion that is recessed toward the inside of the shell. The first positioning member 32 having the recessed portion is in a bowl-shaped structure and is located inside the first air outlet 12 of the annular structure, that is, the radius of the first positioning member 32 is smaller than the radius of the first air outlet 12. The first positioning member 32 is connected to the shell of the main body 10 through a plurality of connecting ribs 31. The second positioning member 33 is received in the recessed portion, that is, the second positioning member 33 is received in the bowl-shaped structure, and is connected to the first positioning member 32, and the first connecting member 13 located between the first positioning member 32 and the second positioning member 33 is clamped and fixed. In order to enhance the connection strength of the first connecting member 13, the first connecting member 13 and the first positioning member 32 can also be pre-connected by bonding, clamping, etc., and then clamped and fixed by the second positioning member 33.

[0073] In one possible embodiment of the present application, see Figures 4 to 6 The bottom of the recessed portion has a positioning portion 323. The second positioning member 33 includes a fixing plate 331 and a connecting column 332 disposed on the fixing plate 331, the connecting column 332 is connected to the positioning portion 323, and the fixing plate 331 and the first positioning member 32 form a clamping structure to clamp and fix the first connecting member 13.

[0074] For example, the recessed portion is a mounting groove 321, and the mounting groove 321 is recessed toward the inside of the shell. A bearing surface 322 is provided on the groove wall of the mounting groove 321, and the bearing surface 322 may be composed of a plurality of protrusions on the groove wall, or the bearing surface 322 is a boss arranged in a ring on the groove wall. There may be one or more positioning portions 323. When there is one positioning portion 323, the positioning portion 323 is arranged at the center of the bottom of the mounting groove 321. When there are multiple positioning portions 323, the positioning portions 323 are arranged at the bottom of the mounting groove 321 and are evenly arranged around the center of the bottom of the mounting groove 321. The positioning portion 323 is provided with a screw hole, and the connecting column 332 can be connected to the positioning portion 323 by a screw.

[0075] To further facilitate the installation of the first connecting member 13 and define the position of the first connecting member 13, see Figure 4 and Figure 6 , a first step structure 3221 is provided on the bearing surface 322. A second step structure 131 used in conjunction with the first step structure 3221 is provided on the first connecting member 13. The first step structure 3221 is engaged with the second step structure 131. The position of the second connecting member 21 can be limited by the first step structure 3221 and the second step structure 131, effectively preventing the first connecting member 13 from being misplaced during installation. At the same time, during installation, there is no need to deliberately align the installation position of the first connecting member 13 and the bearing platform, which facilitates the installation of the first connecting member 13.

[0076] Further, to facilitate the installation of the second positioning member 33, see Figure 5 The fixing plate 331 is provided with a third step structure 3311 used in conjunction with the second step structure 131. The third step structure 3311 is engaged with the second step structure 131, and the surface of the fixing plate 331 is flush with the surface of the first connecting member 13. The second step and the third step can define the connection position of the second positioning member 33, effectively preventing the second positioning member 33 from being misplaced during installation, and also facilitating the installation of the second positioning member 33.

[0077] To prevent the second positioning member 33 from rotating, continue to refer to Figure 4 and Figure 5In the embodiment of the present application, a positioning groove 3231 is provided on the positioning portion 323, and a limiting notch 3232 is provided on the groove wall of the positioning groove 3231. A limiting strip 3321 used in conjunction with the limiting notch 3232 is provided on the connecting column 332. The connecting column 332 extends into the positioning groove 3231 and is connected to the positioning portion 323. The limiting strip 3321 extends into the limiting notch 3232 to prevent the second positioning member 33 from rotating in the radial direction. The limiting notch 3232 extends along the axial direction of the mounting groove 321, and there may be one or more limiting notches 3232. The number of limiting strips 3321 may be the same as or less than the number of limiting notches 3232. When the connecting column 332 extends into the positioning groove 3231 , the connecting column 332 drives the limiting strip 3321 to enter the limiting notch 3232 . Under the joint action of the limiting notch 3232 and the limiting strip 3321 , the connecting column 332 cannot rotate, and thus the second positioning member 33 cannot rotate either.

[0078] On the basis of Example 1, the embodiment of the present application further provides a detachable part. The detachable part in Example 2 can be used in conjunction with the main body 10 in Example 1.

[0079] Specifically, see Figure 1 , Figure 2 and Figure 7 In one embodiment of the present application, a detachable member is provided, including a detachable body 20 and a second connecting member 21. The detachable body 20 has a second air inlet and a second air outlet. The second connecting member 21 is arranged at the second air inlet, and the second connecting member 21 is used to be magnetically connected to the main body 10 to pass through the second air inlet and the first air outlet 12 of the main body.

[0080] The technical solution provided in the embodiment of the present application includes, but is not limited to, a detachable part, including but not limited to a nozzle. The detachable body 20 is magnetically connected to the main body 10 through the second connecting member 21. When the detachable part is assembled and disassembled on the main body 10, it is only necessary to overcome the magnetic force between the second connecting member 21 and the main body 10, and no other operation is required. The second connecting member 21 and the main body 10 are magnetically connected, so that the second connecting member 21 is not easy to wear, and the second connecting member 21 and the main body 10 can be automatically connected after the positions are aligned, so that the disassembly and assembly process of the detachable part is very convenient and fast, the installation process is accurate, the installation effect is good, and it is convenient for users to replace detachable parts with different functions.

[0081] Furthermore, the second air inlet is an annular structure. The second air inlet and the first air outlet 12 are both annular structures, which can achieve good docking and reduce the loss of air flow. Figure 7One possible implementation of the detachable member is that a connecting protrusion 22 is provided at the radial inner side of the annular structure, and the second connecting member 21 is provided on the connecting protrusion 22. When the detachable member is connected to the main body 10, the connecting protrusion 22 can extend into the recessed portion of the positioning structure 30, so that the second connecting member 21 is connected to the first connecting member 13.

[0082] Figure 7 The middle arrow indicates a feasible flow path of the airflow, and the detachable part has a fluid channel connected with the first air outlet 12, and the fluid channel is distributed around the connecting protrusion 22. When the connecting protrusion 22 extends into the recessed portion, the fluid channel is connected with the first air outlet 12 through the second air inlet, and the airflow blown out of the first air outlet 12 enters the fluid channel through the second air inlet, and is then blown out through the second air outlet.

[0083] When the first connection member 13 is an annular structure, the second connection member 21 is multiple and is evenly arranged around the central axis of the connection protrusion 22; or, the second connection member 21 is an annular structure, and the second connection member 21 is an annular structure matching the first connection member 13. When the second connection member 21 is an annular structure, the first connection member 13 may not be an annular structure, but may be multiple and evenly arranged along the center of the bottom of the recessed portion.

[0084] Further, in order to enhance the installation strength of the second connecting member 21, a fixing groove 221 is provided on the connecting protrusion 22. For example, a fixing groove 221 is provided on the side of the connecting protrusion 22 facing the main body 10, and the second connecting member 21 is fixedly connected in the fixing groove 221. The fixing groove 221 can fix the installation position of the second connecting member 21 to prevent the second connecting member 21 from moving. The second connecting member 21 is further bonded or clamped in the fixing groove 221.

[0085] It should be noted that the detachable parts in Example 2 can be used in conjunction with the hair dryer in Example 1. In the case of no structural conflict, the technical features in Example 2 and the technical features in Example 1 can be referenced to each other and will not be described one by one here.

[0086] Based on Example 1 and Example 2, the embodiment of the present application also provides a hair dryer. The main body 10 in Example 3 can be realized by the main body described in Example 1, and the detachable parts can be realized by the detachable parts in Example 2. In the case of no structural conflict, the technical features in Example 3 can be referenced to the technical features in Example 1 and Example 2.

[0087] Specifically, see Figure 1 and Figure 2 In one embodiment of the present application, a hair dryer is provided, including a main body 10 and a detachable body 20.

[0088] The main body 10 includes a shell, the shell has a first air inlet 11 and a first air outlet 12, and a first connecting member 13 is provided at the first air outlet 12. The detachable body 20 has a second air inlet and a second air outlet, and a second connecting member 21 is provided at the second air inlet. The second connecting member 21 is magnetically connected to the first connecting member 13 to connect the detachable body 20 to the main body 10 and pass through the second air inlet and the first air outlet 12.

[0089] The technical solution provided by the embodiment of the present application is that the main body 10 is magnetically connected to the second connecting member 21 on the detachable body 20 through the first connecting member 13. When the detachable body 20 is assembled and disassembled on the main body 10, it is only necessary to overcome the magnetic force between the first connecting member 13 and the second connecting member 21, and no other operation is required. The first connecting member 13 and the second connecting member 21 are magnetically connected, so that the first connecting member 13 and the second connecting member 21 are not easy to wear, and the first connecting member 13 and the second connecting member 21 can be automatically connected after the positions are aligned, so that the disassembly and assembly process of the detachable body 20 is very convenient and fast, the installation process is accurate, the installation effect is good, and it is convenient for users to replace detachable parts with different functions.

[0090] In one possible embodiment of the present application, see Figure 1 In one embodiment of the present application, the main body 10 can be realized in the following manner: the main body 10 includes a shell, various functional components of the hair dryer are arranged in the cavity of the shell, and a first air inlet 11 and a first air outlet 12 are arranged on the shell. The shell generally extends in the longitudinal direction, the first air inlet 11 is located at the front end of the shell, and the first air outlet 12 is located at the rear end of the shell. The first air inlet 11 and the first air outlet 12 are located on the same horizontal plane, and such a design can reduce the loss on the air flow path.

[0091] The components disposed inside the housing include, but are not limited to, a controller assembly and a heating assembly 50 connected to the controller assembly, a fan assembly 60, etc. Relative to the first air inlet 11 and the first air outlet 12, the fan assembly 60 is closer to the first air inlet 11, and the heating assembly 50 is closer to the first air outlet 12. The fan assembly 60 includes a motor for driving a fan and a fan that rotates to generate negative pressure. The fan assembly is configured to generate negative pressure during operation to draw air from the first air inlet 11 into the main body 10, and after being heated by the heating assembly 50, blown out from the first air outlet 12.

[0092] The main body 10 also includes a handle 40, through which the user can hold the hair dryer for blowing. The handle 40 is provided with a control button connected to the controller assembly, and the hair dryer can be controlled to perform different functions by using the control button, for example, the hair dryer can be controlled to blow out wind of different sizes. A battery assembly is also provided in the handle 40, and the battery assembly is connected to the controller assembly. The battery assembly is configured to provide power to other components, or the power cord of the hair dryer passes through the handle 40 and is connected to the controller assembly, and the power cord is connected to an external power supply to provide power to other components. In this embodiment, a feasible way is that the extension direction of the handle 40 is perpendicular to the extension direction of the shell. And one end of the handle 40 is connected to the middle section between the front and rear ends of the shell, so that the entire main body 10 is a T-shaped structure.

[0093] See also Figure 1 , Figure 1 The arrow in the figure represents a feasible flow path of the airflow of the hair dryer. When the hair dryer is working, the airflow is sucked in by the first air inlet 11, passes through the fan assembly 60, the heating assembly 50 and other components, passes through the first air outlet 12 of the main body 10, and is discharged through the detachable part.

[0094] In the embodiment of the present application, the first connecting member 13 includes but is not limited to a magnet, an iron sheet or other parts made of a magnetically conductive material. When the first connecting member 13 is a magnet, the detachable part can be made of an iron material, or the second connecting member 21 on the detachable body 20 includes but is not limited to a magnet, an iron sheet or other parts made of a magnetically conductive material. When the first connecting member 13 is an iron sheet or other parts made of a magnetically conductive material, the second connecting member 21 is a magnet.

[0095] Furthermore, in order to facilitate users to freely adjust the air outlet angle of the detachable part, in the embodiment of the present application, the shape of the first connecting part 13 can be set to a ring structure. After the detachable part is connected to the first connecting part 13, the detachable part can be rotated arbitrarily along the plane where the first connecting part 13 is located, thereby adjusting the air outlet angle of the detachable part.

[0096] See also Figure 3 In an achievable embodiment of the present application, the first air outlet 12 is an annular structure, and the first connecting member 13 is arranged radially inwardly of the annular structure. The first air outlet of the annular structure can make the blowing range of the air outlet larger, thereby improving the blowing effect of the air outlet. The first connecting member 13 is arranged radially inwardly of the annular structure, so that the first connecting member 13 will not affect the air outlet of the first air outlet 12 while magnetically connecting the detachable part.

[0097] In order to better fix the first connecting member 13, in an achievable embodiment of the present application, see Figure 3, the hair dryer also includes a positioning structure 30. The positioning structure 30 is located radially inside the first air outlet 12, and the positioning structure 30 is connected to the shell through a plurality of connecting ribs 31. There is a gap between the positioning structure 30 and the shell, and the gap forms the first air outlet 12 of the annular structure. The first connecting member 13 is connected and fixed to the positioning structure 30. One achievable way is that the positioning structure 30, the connecting ribs 31 and the shell are an integrally formed structure, the positioning structure 30 has a recessed portion recessed into the inside of the shell, and the first connecting member 13 is arranged in the recessed portion. The recessed portion is located radially inside the first air outlet 12 of the annular structure, and the first air outlet 12 is surrounded by the periphery of the positioning structure 30. The first connecting member 13 is located in the recessed portion, and the bottom of the recessed portion is used to connect the first connecting member 13. The detachable member can be inserted into the recessed portion and magnetically connected to the first connecting member 13 through the second connecting member 21.

[0098] Continue to see Figure 3 In order to better fix the first connector 13, a matching structure connected to the first connector 13 is provided in the recessed portion. The first connector 13 is located in the recessed portion and fixed on the matching structure. In the embodiment of the present application, one achievable method is that the matching structure can be a bearing platform, and the first connector 13 is fixedly connected to the bearing platform. Another achievable method is that the matching structure is a first step structure 3221. In order to further facilitate the installation of the first connector 13 and define the position of the first connector 13, a second step structure 131 used in conjunction with the first step structure 3221 is provided on the first connector 13. The first step structure 3221 is snap-fitted with the second step structure 131. The position of the second connector 21 can be defined by the first step structure 3221 and the second step structure 131, which effectively prevents the first connector 13 from being misplaced during installation. At the same time, during installation, there is no need to deliberately align the installation position of the first connector 13 and the bearing platform, which facilitates the installation of the first connector 13.

[0099] Continue to see Figure 3One possible implementation of the positioning structure 30 is that the positioning structure 30 includes a first positioning member 32 and a second positioning member 33. The first positioning member 32 has a recessed portion that is recessed toward the inside of the shell. The first positioning member 32 having the recessed portion is in a bowl-shaped structure and is located inside the first air outlet 12 of the annular structure, that is, the radius of the first positioning member 32 is smaller than the radius of the first air outlet 12. The first positioning member 32 is connected to the shell of the main body 10 through a plurality of connecting ribs 31. The second positioning member 33 is received in the recessed portion, that is, the second positioning member 33 is received in the bowl-shaped structure, and is connected to the first positioning member 32, and the first connecting member 13 located between the first positioning member 32 and the second positioning member 33 is clamped and fixed. In order to enhance the connection strength of the first connecting member 13, the first connecting member 13 and the first positioning member 32 can also be pre-connected by bonding, clamping, etc., and then clamped and fixed by the second positioning member 33.

[0100] In one possible embodiment of the present application, see Figures 4 to 6 The bottom of the recessed portion has a positioning portion 323. The second positioning member 33 includes a fixing plate 331 and a connecting column 332 disposed on the fixing plate 331, the connecting column 332 is connected to the positioning portion 323, and the fixing plate 331 and the first positioning member 32 form a clamping structure to clamp and fix the first connecting member 13.

[0101] For example, the recessed portion is a mounting groove 321, and the mounting groove 321 is recessed toward the inside of the shell. A bearing surface 322 is provided on the groove wall of the mounting groove 321, and the bearing surface 322 may be composed of a plurality of protrusions on the groove wall, or the bearing surface 322 is a boss arranged in a ring on the groove wall. There may be one or more positioning portions 323. When there is one positioning portion 323, the positioning portion 323 is arranged at the center of the bottom of the mounting groove 321. When there are multiple positioning portions 323, the positioning portions 323 are arranged at the bottom of the mounting groove 321 and are evenly arranged around the center of the bottom of the mounting groove 321. The positioning portion 323 is provided with a screw hole, and the connecting column 332 can be connected to the positioning portion 323 by a screw.

[0102] To further facilitate the installation of the first connecting member 13 and define the position of the first connecting member 13, see Figure 4 and Figure 6, a first step structure 3221 is provided on the bearing surface 322. A second step structure 131 used in conjunction with the first step structure 3221 is provided on the first connecting member 13. The first step structure 3221 is engaged with the second step structure 131. The position of the second connecting member 21 can be limited by the first step structure 3221 and the second step structure 131, effectively preventing the first connecting member 13 from being misplaced during installation. At the same time, during installation, there is no need to deliberately align the installation position of the first connecting member 13 and the bearing platform, which facilitates the installation of the first connecting member 13.

[0103] Further, to facilitate the installation of the second positioning member 33, see Figure 5 The fixing plate 331 is provided with a third step structure 3311 used in conjunction with the second step structure 131. The third step structure 3311 is engaged with the second step structure 131, and the surface of the fixing plate 331 is flush with the surface of the first connecting member 13. The second step and the third step can define the connection position of the second positioning member 33, effectively preventing the second positioning member 33 from being misplaced during installation, and also facilitating the installation of the second positioning member 33.

[0104] To prevent the second positioning member 33 from rotating, continue to refer to Figure 4 and Figure 5 In the embodiment of the present application, a positioning groove 3231 is provided on the positioning portion 323, and a limiting notch 3232 is provided on the groove wall of the positioning groove 3231. A limiting strip 3321 used in conjunction with the limiting notch 3232 is provided on the connecting column 332. The connecting column 332 extends into the positioning groove 3231 and is connected to the positioning portion 323. The limiting strip 3321 extends into the limiting notch 3232 to prevent the second positioning member 33 from rotating in the radial direction. The limiting notch 3232 extends along the axial direction of the mounting groove 321, and there may be one or more limiting notches 3232. The number of limiting strips 3321 may be the same as or less than the number of limiting notches 3232. When the connecting column 332 extends into the positioning groove 3231 , the connecting column 332 drives the limiting strip 3321 to enter the limiting notch 3232 . Under the joint action of the limiting notch 3232 and the limiting strip 3321 , the connecting column 332 cannot rotate, and thus the second positioning member 33 cannot rotate either.

[0105] Further, see Figure 7, the second air inlet is an annular structure. The second air inlet and the first air outlet 13 are both annular structures, which can achieve good docking and reduce the loss of air flow. One possible way to realize the detachable part is that a connecting protrusion 22 is provided on the radial inner side of the annular structure, and the second connecting member 21 is provided on the connecting protrusion 22. When the detachable body 20 is connected to the main body 10, the connecting protrusion 22 can extend into the recessed portion of the positioning structure 30 so that the second connecting member 21 is connected to the first connecting member 13.

[0106] Figure 7 The middle arrow indicates a feasible flow path of the airflow. The detachable body 20 has a fluid channel connected to the first air outlet 12. The fluid channel is distributed around the connecting protrusion 22. When the connecting protrusion 22 extends into the recessed portion, the fluid channel is connected to the first air outlet 12 through the second air inlet. The airflow blown out of the first air outlet 12 enters the fluid channel through the second air inlet, and is then blown out through the second air outlet.

[0107] When the first connection member 13 is an annular structure, the second connection member 21 is multiple and is evenly arranged around the central axis of the connection protrusion 22; or, the second connection member 21 is an annular structure, and the second connection member 21 is an annular structure matching the first connection member 13. When the second connection member 21 is an annular structure, the first connection member 13 may not be an annular structure, but may be multiple and evenly arranged along the center of the bottom of the recessed portion.

[0108] Further, in order to enhance the installation strength of the second connecting member 21, a fixing groove 221 is provided on the connecting protrusion 22. For example, a fixing groove 221 is provided on the side of the connecting protrusion 22 facing the main body 10, and the second connecting member 21 is fixedly connected in the fixing groove 221. The fixing groove 221 can fix the installation position of the second connecting member 21 to prevent the second connecting member 21 from moving. The second connecting member 21 is further bonded or clamped in the fixing groove 221.

[0109] It should be noted that, in the case of no structural conflict, the technical features in Example 3 can be referenced to each other with the technical features in Example 1 and Example 2, and will not be described one by one here.

[0110] The technical solution adopted in this application is described below in combination with specific application scenarios to help understanding. In the following application scenario, the hair dryer is a handheld hair dryer, the detachable part is a nozzle, the first connecting part is a magnet, and the second connecting part is an iron sheet.

[0111] Application Scenario 1

[0112] When the user needs to remove the air nozzle from the main body, the user applies force on the air nozzle and pulls the air nozzle along the extension direction of the air flow, so that the magnet arranged on the main body is separated from the iron sheet arranged on the air nozzle, so that the air nozzle is separated from the main body.

[0113] When installing the air nozzle, place the air nozzle close to the main body so that the positions of the magnet and the iron sheet correspond. The magnet and the iron sheet are automatically adsorbed to complete the installation of the air nozzle.

[0114] Application Scenario 2

[0115] When the user needs to remove the nozzle of the hair dryer, he applies force on the nozzle and rotates the nozzle so that the magnet and the iron sheet are misaligned and the magnetic force disappears. The nozzle is pulled along the extension direction of the air flow to separate the nozzle from the main body.

[0116] When installing the air nozzle, insert the air nozzle into the installation slot. After inserting it a certain distance, rotate the air nozzle so that the positions of the magnet and the iron sheet correspond. The magnet and the iron sheet are automatically adsorbed to complete the installation of the air nozzle.

[0117] Application Scenario 3

[0118] At least one of the magnet and the iron sheet is annular, and the air nozzle can rotate freely.

[0119] When the user needs to remove the air nozzle from the main body, the user applies force on the air nozzle and pulls the air nozzle along the extension direction of the air flow, so that the magnet arranged on the main body is separated from the iron sheet arranged on the air nozzle, so that the air nozzle is separated from the main body.

[0120] When installing the air nozzle, move the air nozzle close to the main body so that the distance between the magnet and the iron sheet is small enough, and the magnet and the iron sheet are automatically adsorbed to complete the installation of the air nozzle.

[0121] In addition to the inconvenient nozzle disassembly and assembly process mentioned above, the inventors have found that when adjusting the wind speed and temperature of the air outlet, existing hair dryers generally use buttons to manually set the wind speed and temperature. Regardless of whether there is a user in front of the first air outlet of the hair dryer, and regardless of the distance between the user and the hair dryer, if there is no manual operation, only a fixed wind temperature and wind speed gear can be used. When the user feels uncomfortable, he or she can only move the hair dryer away, or manually switch to other gears until a suitable wind temperature and wind speed gear is found. It is very inconvenient to use and the user experience is not good.

[0122] The inventor believes that the reason for this is that current hair dryer products lack the technology to identify the distance of the user and are unable to adjust the temperature and speed of the air according to the distance between the hair dryer and the user. Therefore, the distance can only be passively adjusted manually or the gear can be switched relying on the user's own consciousness.

[0123] In response to the above problems, the present application also provides the following embodiments, which can control the working status of the heating component and the fan component according to the distance information of the distance sensor, thereby adjusting the wind temperature and wind speed, effectively improving the intelligence of the hair dryer, effectively realizing the protection of the human body, and being simple and convenient.

[0124] For example, Figure 8 This is a schematic cross-sectional view of a hair dryer provided in one embodiment of the present application. Fig. 9 A circuit diagram of a hair dryer provided in one embodiment of the present application is shown in FIG. Fig.10 A bottom view of the structure of a hair dryer provided in one embodiment of the present application is shown in FIG. Figures 8 to 10 shown.

[0125] In one embodiment of the present application, a hair dryer is provided, including: a main body 10 and a distance sensor 200. The main body 10 has a first air inlet 11 and a first air outlet 12. Fig. 9 As shown, the main body 10 is provided with a main control board 213 and a heating assembly 50 and a fan assembly 60 electrically connected to the main control board 213. The distance sensor 200 is provided at the end of the first air outlet 12 and is electrically connected to the main control board 213, so that the main control board 213 receives the distance signal detected by the distance sensor 200 and controls the working state of the heating assembly 50 and the fan assembly 60.

[0126] It should be noted here that the controller component mentioned above, which is electrically connected to the fan component 60 and the heating component 50, may include the main control board 213 mentioned in this embodiment.

[0127] The technical solution provided in the embodiment of the present application is that the distance sensor 200 can detect the distance between the first air outlet 12 of the main body 10 and the human body being measured, and the main control board 213 can control the working status of the heating component 50 and the fan component 60 according to the distance signal of the distance sensor 200, which effectively improves the intelligence of the hair dryer, effectively realizes the protection of the human body, and is simple and convenient.

[0128] In one possible embodiment of the present application, see Figure 8One possible implementation of the main body 10 in the embodiment of the present application is that the main body 10 includes a shell, and various functional components of the hair dryer are arranged in the cavity of the shell, and the shell is provided with a first air inlet 11 and a first air outlet 12. The components arranged inside the shell include, but are not limited to, a main control board 213, a heating component 50 connected to the main control board 213, and a fan component 60. The fan component 60 includes a motor for driving the fan and a fan that rotates to generate negative pressure. The fan component 60 is configured to form a negative pressure during operation to suck air from the first air inlet 11 into the main body 10, and blow it out from the first air outlet 12 after passing through the heating component 50. A handle 40 is also provided on the main body 10, and the user can use the handle 40 to hold the hair dryer for blowing.

[0129] It should be noted that in the embodiment of the present application, in order to realize the control of the heating component 50 and the fan component 60 by the main control board 213, a control circuit for controlling the working state of the heating component 50 and the fan component 60 is provided on the main control board 213. Through the control circuit, the main control board 213 can control the fan component 60 in various working states, for example, control the start and stop of the fan component 60, realize the wind force blown out by the fan component 60 by controlling different speeds, and control the fan component 60 to blow out strong wind, light wind and other states. Of course, the control of wind force is not limited to strong wind and light wind, and the wind blowing out of various wind forces can be controlled according to different needs. The main control board 213 can also control the heating component 50 in various working states, for example, control the start and stop of the heating component 50, control the temperature of the heating component 50 by controlling the power-on current of the heating component 50, so as to realize the state of the wind becoming hot wind, slightly hot wind and other states.

[0130] In the embodiment of the present application, the distance sensor 200 is configured to detect the distance between the first air outlet 12 and the human body being measured and send the above distance signal to the main control board 213. The distance sensor 200 includes but is not limited to one or more of an infrared ranging sensor, a radar ranging sensor or a laser ranging sensor. The detection distance accuracy of the distance sensor 200 is 1mm, and the maximum detection range is 1m. Of course, the detection distance accuracy and maximum detection range of the distance sensor 200 can be adjusted accordingly according to different detection requirements, and are not specifically limited here. Fig.10 The area of ​​the middle triangle represents the detection range of the distance sensor 200. Fig.10 The description is for illustrative purposes only and does not constitute an improper limitation of the embodiments of the present application.

[0131] The main control board 213 can control the working state of the fan assembly 60 and the heating assembly 50 according to the received distance signal. For example, when the distance sensor 200 detects that the distance between the first air outlet 12 and the measured human body becomes closer, the main control board 213 can control the wind speed of the fan assembly 60 to become smaller, and the temperature of the heating assembly 50 to become smaller, so that the wind blown out of the first air outlet 12 is slightly hot wind, and the user does not need to worry about the first air outlet 12 being too close to the hair and scalding the hair when using the hair dryer. For another example, when the distance sensor 200 detects that the distance between the first air outlet 12 and the measured human body becomes farther, the main control board 213 can control the wind speed of the fan assembly 60 to become larger, and the temperature of the heating assembly 50 to become larger, so that the wind blown out of the first air outlet 12 is strong hot wind, and the user does not need to worry about the first air outlet 12 being too far from the hair and the temperature and wind speed being too low, and the hair blowing effect being poor when using the hair dryer. The hair dryer will automatically adjust the wind temperature and wind speed according to the distance detection, greatly improving the user experience.

[0132] Specifically, in the embodiment of the present application, the main control board 213 can automatically adjust the power of the fan assembly 60 and the heating assembly 50 according to the distance signal of the distance sensor 200, so that the temperature and air volume of the measured human body position remain constant, thereby ensuring that the user object is always kept within a reasonable temperature and air volume range. For example, when the measured human body position is far away from the first air outlet 12, the power of the heating assembly 50 is increased, and when the measured human body position is close to the first air outlet 12, the power of the heating assembly 50 is reduced, so that the temperature of the measured human body position remains constant. Similarly, the main control board 213 adjusts the power of the fan assembly 60 according to the distance signal, so that the air volume of the measured human body position remains constant.

[0133] It should be noted that the process of the distance sensor 200 detecting the distance between the first air outlet 12 and the human body being measured can be real-time, and the main control board 213 controlling the working status of the fan assembly 60 and the heating assembly 50 is also real-time. For example, when the distance sensor 200 detects that the distance between the first air outlet 12 and the human body being measured is gradually getting farther or closer, the main control board 213 can control the wind speed of the fan assembly 60 to gradually increase or decrease, and the temperature of the heating assembly 50 to gradually increase or decrease.

[0134] The process of the distance sensor 200 detecting the distance between the first air outlet 12 and the measured human body can be real-time, and the main control board 213 controls the working state of the fan assembly 60 and the heating assembly 50 in stages. For example, when the distance sensor 200 detects that the distance between the first air outlet 12 and the measured human body reaches a predetermined value, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to change the state. For example, when the hair dryer is 10 cm away from the human body, the main control board 213 can control the fan assembly 60 to blow out a breeze, and the temperature of the heating assembly 50 is 10 degrees. When the hair dryer is 20 cm away from the human body, the main control board 213 can control the fan assembly 60 to blow out a strong wind, and the temperature of the heating assembly 50 is 15 degrees. Of course, the predetermined value can be adjusted accordingly according to different detection requirements, and is not specifically limited here.

[0135] When people use hair dryers in daily life, the following special situations often occur. For example, the first air outlet 12 of the hair dryer is too close to the human body. At this time, if the hair dryer continues to run, it is easy to cause human body injuries, such as burns. For another example, the first air outlet 12 of the hair dryer is too far away from the human body. At this time, if the hair dryer continues to run, it can no longer blow to the human body. The hair dryer is in an idling state, resulting in a waste of resources. For the above two situations, the processing methods in the embodiments of the present application include but are not limited to the following methods:

[0136] The main control board 213 stores a first distance threshold and a second distance threshold in advance. The first distance threshold is used as the minimum safe distance of the hair dryer. When the main control board 213 receives a distance signal from the distance sensor 200, the distance signal indicates the distance between the hair dryer and the human body being measured. The distance signal is compared with the first distance threshold. When the distance between the hair dryer and the human body being measured is greater than or equal to the first distance threshold, it indicates that the human body is still within the minimum safe distance, and the hair dryer can continue to work. When the distance between the hair dryer and the human body being measured is equal to the first distance threshold, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to operate in the minimum working state. For example, the fan assembly 60 is adjusted from a strong wind state to a breeze state. When the distance between the hair dryer and the human body being measured is less than the first distance threshold, it indicates that the human body is no longer within the minimum safe distance. If the hair dryer continues to work, it is easy to cause damage to the human body. At this time, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to stop running. When the hair dryer stops running, when the distance between the hair dryer and the detected human body is restored to be greater than or equal to the first distance threshold, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to run again. In the embodiment of the present application, the first preset distance is 10 cm. Of course, the first preset distance can be adjusted accordingly according to different detection requirements, which is not specifically limited here.

[0137] The second distance threshold is used as the maximum safety distance of the hair dryer. When the main control board 213 receives the distance signal from the distance sensor 200, the distance signal is compared with the second distance threshold. When the distance between the hair dryer and the measured human body is less than or equal to the second distance threshold, it means that the human body is still within the maximum safety distance, and the hair dryer can continue to work. When the distance between the hair dryer and the measured human body is equal to the second distance threshold, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to operate at the maximum working state. When the distance between the hair dryer and the measured human body is greater than the second distance threshold, it means that the human body is no longer within the maximum safety distance. If the hair dryer continues to work, it can no longer blow to the human body and is in an idling state. At this time, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to stop running, or adjust to run in the minimum operating state. When the hair dryer stops running, when the distance between the hair dryer and the measured human body is restored to be less than or equal to the second distance threshold, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to run again. In the embodiment of the present application, the second preset distance is 1m. Of course, the second preset distance can be adjusted accordingly according to different detection requirements and is not specifically limited here.

[0138] In the embodiment of the present application, by pre-storing the first distance threshold and the second distance threshold in the main control board 213, the hair dryer can more intelligently adjust the wind temperature and wind speed of the air outlet, which can effectively solve the following problems: For example, when the existing hair dryer is turned on for the first time, it can only run at the current gear, and it will also run at high wind and high heat when blowing air. The hair dryer in the embodiment of the present application can determine whether there is a user when the hair dryer is turned on. If there is no user, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to stop running, or adjust them to run at the minimum operating state.

[0139] For another example, if the first air outlet 12 of the hair dryer is too close to the user, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to reduce the wind speed and wind temperature to avoid scalding the user's scalp or hair. If the distance is less than the first distance threshold, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to stop running. If the first air outlet 12 of the hair dryer is too far from the user, the main control board 213 can control the fan assembly 60 and the heating assembly 50 to increase the wind speed and wind temperature to improve the hair drying effect.

[0140] Further, in order to better identify the distance signal detected by the distance sensor 200, see Fig. 9In the embodiment of the present application, the distance sensor 200 is connected to the main control board 213 via a distance identification circuit 16. After receiving the distance signal from the distance sensor 200, the distance identification circuit 16 transmits it to the main control board 213. The main control board 213 controls the working state of the fan assembly 60 and the heating assembly 50 according to the distance information, thereby adjusting the wind temperature and wind speed of the hair dryer. In the embodiment of the present application, the distance identification circuit 16 includes but is not limited to an A / D conversion circuit (analog-to-digital converter). The distance sensor 200 detects the distance signal and transmits it to the A / D conversion circuit for analog-to-digital conversion to form digital information. The A / D conversion circuit transmits the digital information to the main control board 213. The main control board 213 determines the distance information according to the digital information and controls the working state of the fan assembly 60 and the heating assembly 50 according to the distance information. It should be noted that the distance identification circuit 16 can be an independent component or integrated on the main control board 213.

[0141] Continue to see Figure 8 In the embodiment of the present application, the hair dryer further includes a nozzle 230, which is located at the active first air outlet 12 and connected to the main body 10. When the hair dryer is in use, the main body 10 of the hair dryer is usually used in conjunction with the nozzle 230, and different air outlet effects are achieved by replacing the nozzles 230 with different functions. One implementation of the nozzle is that the nozzle 230 includes an air outlet portion 231 and a connecting protrusion 22 provided on the air outlet portion 231, and the connecting protrusion 22 is rotatably connected to the main body 10. The nozzle 230 can be rotated relative to the main body 10, thereby changing the angle of air outlet.

[0142] See also Figures 10 to 12 One possible implementation of the air outlet 231 is a flat-mouth structure. When the air outlet 231 with a flat-mouth structure rotates, the end portion may block the distance sensor 200, and the blocked distance sensor 200 will not work normally, or the detected distance is always less than the first distance threshold, so that the main control board 213 controls the fan assembly 60 and the heating assembly 50 to stop running.

[0143] To prevent the nozzle 230 from blocking the distance sensor 200, continue Figures 10 to 12 In an achievable embodiment of the present application, there are at least two distance sensors 200. Each distance sensor 200 is electrically connected to the main control board 213 independently. The connection line between each two distance sensors 200 does not pass through the center point of the first air outlet 12. Each distance sensor 200 can perform detection independently, that is, as long as one sensor detects the human body being detected, the main control board 213 will automatically adjust the wind speed and temperature according to the distance information detected by the distance sensor 200. See Fig.11 , Fig.11The air outlet 231 of the central air nozzle 230 is in a vertical state, and the air outlet 231 of the air nozzle 230 passes through the center point of the first air outlet 12. There are two distance sensors 200, which are distributed on both sides of the air nozzle 230. The line between the two distance sensors 200 does not pass through the center point of the first air outlet 12. When the air nozzle 230 rotates, no matter what angle the air outlet 231 rotates to, the two distance sensors 200 will not be blocked at the same time. In other words, no matter how the air nozzle 230 rotates, there will always be one distance sensor 200 that is not blocked, and at least one distance sensor 200 is in a normal working state, thereby ensuring that the hair dryer can be used normally. Fig.11 The situation shown in FIG. 2 is that the nozzle 230 does not block any distance sensor 200, and both distance sensors 200 can detect normally. Fig.12 , Fig.12 The situation shown in FIG. 2 is that the air outlet portion 231 of the air nozzle 230 rotates to a certain angle, blocking one distance sensor 200 , but the other sensor is not blocked and can continue to detect normally.

[0144] Furthermore, in the embodiment of the present application, the distance sensor 200 includes a transmitting area and a receiving area. The connecting line between the transmitting area on each distance sensor 200 and the transmitting area and the receiving area on another distance sensor 200 does not pass through the center point of the first air outlet 12. The connecting line between the receiving area on each distance sensor 200 and the receiving area on another distance sensor 200 does not pass through the center point of the first air outlet 12. No matter how the air nozzle 230 rotates, the air nozzle 230 cannot block the transmitting area and the receiving area of ​​the two sensors at the same time, that is, there is always one sensor that is not blocked, and at least one sensor is in normal working condition, thereby ensuring the normal use of the hair dryer.

[0145] In the above embodiment, when at least two distance sensors 200 are detecting normally, the main control board 213 will receive two distance signals. Since the user may shake the hair dryer back and forth when using it, the hair dryer may have different blowing angles, resulting in inconsistency of the distance signals detected by at least two distance sensors 200. If the main control board 213 controls the working state of the fan assembly 60 and the heating assembly 50 according to the two distance signals, the wind speed and wind temperature of the hair dryer may be very chaotic, and the blowing is not good.

[0146] To avoid this situation, in an achievable embodiment of the present application, a correction circuit is provided on the main control board 213, and the correction circuit is electrically connected to the distance sensor 200. The function of the correction circuit is to correct at least two distance signals into one distance signal, so that the main control board 213 controls the working state of the fan assembly 60 and the heating assembly 50 according to the corrected distance signal. The correction circuit corrects the distance signal in the following ways, including but not limited to:

[0147] One achievable manner is that the correction circuit randomly selects one distance signal from at least two distance signals and transmits it to the main control board 213 .

[0148] Another achievable manner is that the correction circuit selects a distance signal having a shorter distance between the first air outlet 12 and the measured human body from among at least two distance signals and transmits the signal to the main control board 213 .

[0149] Another achievable manner is that the correction circuit calculates the average distance of at least two distance signals and transmits the average distance to the main control board 213 .

[0150] It should be noted that the correction circuit can be an independent component or integrated on the main control board 213 .

[0151] In the embodiment of the present application, a heat insulation layer is provided on the periphery of the distance sensor 200. The heat insulation layer is provided on the periphery of the distance sensor 200 to protect the distance sensor 200 from the temperature of the first air outlet 12. The shape of the heat insulation layer can be set in accordance with the shape of the distance sensor 200. It should be noted that the shape and material of the heat insulation layer can be set according to different heat insulation requirements, and the embodiment of the present application does not specifically limit it.

[0152] Furthermore, in order to improve the installation strength of the distance sensor 200, in the embodiment of the present application, a mounting hole is provided on the end of the first air outlet 12. The distance sensor 200 is installed in the mounting hole. The heat insulation layer is provided between the mounting hole and the distance sensor 200. On the one hand, the mounting hole can define the installation position of the distance sensor 200, which is convenient for positioning and installing the distance sensor 200; on the other hand, the distance sensor 200 is located in the mounting hole, which plays a certain protective role on the distance sensor 200 and prevents the distance sensor 200 from being damaged by foreign objects. The heat insulation layer is provided in the mounting hole to prevent the temperature from passing through the mounting hole and affecting the distance sensor 200.

[0153] Continue to see Figures 10 to 12, the main body 10 is also provided with a handle 40. The handle 40 is provided with a control unit 218, and the control unit 218 is electrically connected to the main control board 213. The control unit 218 can be used to control the hair dryer to perform different functions, for example, to control the start and stop of the fan assembly 60 and the heating assembly 50, and to control the fan assembly 60 to blow out wind of different sizes. When the distance sensor 200 detects that the distance between the hair dryer and the measured human body is less than the first distance threshold, or detects that the distance between the hair dryer and the measured human body is greater than the second distance threshold, the main control board can also control the fan assembly 60 and the heating assembly 50 to stop running through the control unit 218. Further, a battery assembly is also provided in the handle 40, and the battery assembly is connected to the main control board 213. The battery assembly is configured to provide power to the main control board 213, the fan assembly 60 and the heating assembly 50, or the power cord of the hair dryer passes through the handle 40 and is connected to the main control board 213, and the power cord is connected to an external power supply to provide power to the main control board 213, the fan assembly 60 and the heating assembly 50. In specific implementation, the control unit 218 may include: at least one control switch or touch control, etc. When there are multiple control switches or touch controls, each control switch or touch control may correspond to different functional controls, such as wind speed control function, heating and cooling control function, etc.

[0154] Furthermore, a temperature sensor is provided in the main body 10, and the temperature sensor is electrically connected to the main control board 213, so that the main control board 213 receives the temperature signal detected by the temperature sensor and controls the working state of the heating component 50 and the fan component 60. The temperature sensor can detect the temperature of the heating component 50 in real time, and transmit the temperature signal to the main control board 213. When the temperature exceeds the temperature threshold, the main control board 213 controls the heating component 50 to turn off or reduce the power, controls the fan component 60 to increase the wind force or turn off, etc. The temperature threshold can be set according to different temperature requirements, and is not specifically limited in the embodiment of the present application.

[0155] The technical solution adopted in this application is described below in combination with specific application scenarios to help understanding. In the following application scenario, a hair dryer is a handheld hair dryer and there are two distance sensors as an example.

[0156] Application Scenario 4

[0157] When the user needs to use the hair dryer, the distance sensor can detect the distance between the first air outlet of the hair dryer and the measured human body in real time.

[0158] When the distance sensor detects that the distance between the first air outlet and the measured human body is getting closer, the main control board can control the wind speed of the fan component to become smaller and the temperature of the heating component to become lower, so that the wind blown out of the first air outlet is slightly hot air. When using a hair dryer, the user does not need to worry about burning the hair due to the first air outlet being too close to the hair.

[0159] When the distance sensor detects that the distance between the first air outlet and the measured human body becomes farther, the main control board can control the wind speed of the fan component to increase and the temperature of the heating component to increase, so that the wind blown out of the first air outlet is strong hot air. When using a hair dryer, the user does not have to worry about the first air outlet being too far away from the hair, the temperature and wind speed will be too low, resulting in poor hair blowing effect.

[0160] Application Scenario 5

[0161] When the user needs to use the hair dryer, the distance sensor can detect the distance between the first air outlet of the hair dryer and the measured human body in real time.

[0162] When the distance sensor detects that the distance between the hair dryer and the measured human body is greater than or equal to the first distance threshold, the hair dryer can continue to work, and the fan assembly is in a breeze state.

[0163] When the distance between the hair dryer and the human body being measured is less than the first distance threshold, it means that the human body is no longer within the minimum safety distance. At this time, the main control board can control the fan component and the heating component to stop running.

[0164] Application Scenario 6

[0165] When the user needs to use the hair dryer, the distance sensor can detect the distance between the first air outlet of the hair dryer and the measured human body in real time.

[0166] When the distance sensor detects that the distance between the hair dryer and the measured human body is less than or equal to the second distance threshold, the hair dryer can continue to work, and the hair dryer can adjust the wind speed and wind temperature according to the distance from the human body.

[0167] When the distance between the hair dryer and the measured human body is greater than the second distance threshold, at this time, the main control board can control the fan component and the heating component to stop running, or adjust them to run in the minimum operating state.

[0168] In addition, most existing hair dryers rely on heating wires to generate heat, and the temperature of the heating wires is as high as about 500 degrees, and they can only be in direct contact with the mica support sheet. Fig.13 As shown, the heating wire of the hair dryer product is wound on a mica sheet support frame 101, and the mica sheet support frame 101 is fixed on a cylinder 102. The end surface of the cylinder 102 facing the fan assembly 60 is the windward surface 100. The airflow from the fan assembly 60 hits the windward surface 100 head-on, which is very likely to form turbulence and generate noise. In view of the problems existing in the prior art, the present application proposes the following embodiments to reduce noise.

[0169] Fig.14a , 14b A schematic diagram of a hair dryer provided in one embodiment of the present application. Fig.14a , 14bAs shown, the hair dryer includes: a main body 10, a fan assembly 60 and a heating assembly 50. The main body 10 has an airflow channel; the fan assembly 60 is used to output power to suck gas into the airflow channel; the heating assembly 50 is used to heat the airflow in the airflow channel. The airflow channel includes a first flow section 203 and a second flow section 201 with a step change, and a guide section 202 is provided between the first flow section 203 and the second flow section 201, so that the airflow flows from the first flow section 203 to the second flow section 201 along the guide path provided by the guide section 202.

[0170] by Fig.14a Taking the hair dryer structure shown as an example, the arrow marked 204 in the figure schematically represents the direction of airflow. In the figure, ① is the air outlet position of the fan assembly, where the cross section is small and the airflow velocity is fast. ② is the second flow section where the heating assembly is located, and the cross-sectional area of ​​the second flow section is larger than that of the first flow section where the fan assembly is located. ③ is the first air outlet 12 of the airflow channel. After the airflow enters the first flow section 203 from the first air inlet 11 of the airflow channel and accelerates, it enters the second flow section 201 for heating and is discharged from the first air outlet 12. In this embodiment, a guide section 202 is set between the first flow section 203 and the second flow section 201 to guide the airflow along the fan assembly 60 after it comes out. Fig.14a As shown, it moves obliquely into the second flow section 201. Fig.13 The structure shown and the technical solution provided by this embodiment eliminate the windward surface for the airflow to directly collide with, so the airflow path is smoother, and the turbulence caused by the airflow hitting the plane is reduced, which helps to reduce noise; at the same time, it can also increase the air volume.

[0171] In the embodiment of the present application, the first flow section and the second flow section can be any flow section in the air flow channel, and are not limited to Fig.14a , 14b The fan assembly 60 and the heating assembly 50 shown correspond to two flow sections 203 and 201 respectively; as long as there is a step-wise change between two adjacent flow sections, the airflow will directly collide with the step surface at the connection between the two flow sections. A drainage section may also be set between the two flow sections to reduce turbulence caused by the airflow hitting the plane.

[0172] Continue with Fig.14a , 14b Taking the structure shown as an example, in the hair dryer provided in this embodiment: a space between the outer wall 140 of the fan assembly 60 and the inner wall 17 of the main body 10 is the first flow section 203; a space between the outer wall 150 of the heating assembly 50 and the inner wall 17 of the main body 10 is the second flow section 201.

[0173] For details, see Fig.14a, 14b As shown, the cross-sectional area of ​​the inner wall 17 of the main body 10 at the first flow section 203 is smaller than the cross-sectional area of ​​the inner wall 17 of the main body 10 at the second flow section 201; the cross-sectional area of ​​the outer wall 140 of the fan assembly 60 is smaller than the cross-sectional area of ​​the outer wall 150 of the heating assembly 50; the fan assembly 60 has a first axis parallel to the flow direction of the airflow in the first flow section 203; the heating assembly 50 has a second axis parallel to the flow direction of the gas in the second flow section 201; the first axis coincides with the second axis. Fig.14a As shown, the first axis and the second axis coincide with the axis of the main body 10 .

[0174] In this embodiment, the drainage section 202 can be formed by adding a component between the fan assembly 60 and the heating assembly 50; or by providing a drainage structure on the heating assembly 50; or by providing a drainage structure on the fan assembly 60, etc. Each of these will be described in detail below.

[0175] The scheme of forming a drainage section by setting a drainage structure on the heating component: see Fig.14a , 14b and Fig.15 As shown, the drainage structure 152 is provided at one end of the heating component 50 near the fan component 60 ; a section of space between the drainage surface 1521 of the drainage structure 152 and the inner wall of the main body 10 is the drainage section 202 .

[0176] More specifically, the heating assembly 50 includes a fixing member 153 and a heating component 154 . The air guide structure 152 is disposed at one end of the fixing member 153 close to the fan assembly 60 ; and the heating component 154 surrounds the outer periphery of the fixing member 153 .

[0177] like Fig.14a , 14b and Fig.15 In the example shown, the drainage structure 152 is a frustum of a cone with a small end surface facing the fan assembly 60 and a large end surface facing away from the fan assembly 60; the inclined surface of the frustum of a cone connecting the large end surface and the small end surface is the drainage surface 1521.

[0178] Furthermore, in order to reduce the weight of the hair dryer, Fig.14a The cross-sectional diagram and Fig.14b In the three-dimensional schematic diagram shown, the fixing member 153 is a cylindrical member with one end closed and the other end open; the drainage structure 152 is arranged at the closed end of the fixing member 153. Here, the closed end of the fixing member 153 faces the fan assembly 60, and the purpose is to prevent the airflow from entering the hollow inner cavity of the cylindrical member of the fixing member 153.

[0179] Furthermore, the heating component 154 includes: a support member 1541 and a heating wire 1542. The support member 1541 is disposed on the outer wall of the fixing member 153 and extends from the closed end to the open end of the fixing member 153; the heating wire 1542 is wound around the support member 1541. For details, see Figure 3 As shown, the support member 1541 includes a plurality of mica sheets of different heights. The mica sheets are arranged on the outer wall of the fixing member in intervals of height, the first layer of heating wires 15422 is wound on the short mica sheets, and the second layer of heating wires 15421 is wound on the tall mica sheets.

[0180] The scheme of forming a drainage section by setting a drainage structure on the heating component: see Fig.16 As shown in the schematic diagram, the drainage structure 152 is provided at one end of the fan assembly 60 near the heating assembly 50 ; a section of space between the drainage surface 1521 of the drainage structure 152 and the inner wall 17 of the main body 10 is the drainage section 202 .

[0181] In a specific embodiment, the fan assembly 60 includes: a motor housing 140, a motor (not shown in the figure) and a fan 141. The motor housing 140 has a first end and a second end opposite to each other; the motor is accommodated in the motor housing 140, and the power output end extends from the first end of the motor housing 140; the fan 141 is connected to the power output end of the motor to rotate under the drive of the motor. The second end of the motor housing 140 is provided with the drainage structure 152. Furthermore, the drainage surface 1521 is an inclined surface extending from the second end of the motor housing 140 to the heating component 50.

[0182] The scheme of forming a drainage section by setting a drainage structure between the heating component and the fan component is similar to the above Fig.16 The drainage structure 152 has an inclined drainage surface 1521 pointing from the air outlet side of the fan assembly 60 to the heating assembly 50. The drainage structure 152 can be a structure in the inner cavity of the main body 10, not connected to any one of the fan assembly 60 and the heating assembly 50, and can be in contact with or have a certain gap.

[0183] like Fig.14a and 14b As shown, air enters from the first air inlet 11 of the air flow channel, is accelerated by the fan assembly 60, is heated by the heating assembly 50, and is discharged from the first air outlet 12 of the air flow channel. The rotation of the fan 141 in the fan assembly 60 and the high-speed air flow movement inside the main body 10 of the hair dryer will generate a large noise. In the specific implementation, a silencer assembly 90 can be added in the air flow channel, see Fig.17 shown.

[0184] Specifically, the muffler assembly 90 may be disposed between the heating assembly 50 and the fan assembly 60. The muffler assembly 90 includes a porous muffler cover 91. Fig.18 As shown, the porous silencer cover 91 is a cover body with openings at both ends, and the opening diameter of the first end is smaller than the opening diameter of the second end. The cover body surface of the porous silencer cover 91 is parallel to the flow direction of the airflow in the drainage section. Fig.17 and Fig.18 In the specific example shown, the first end of the porous silencer cover 91 is connected to the fan assembly 60, and the second end faces the heating assembly 50. In an achievable technical solution, a motor cover 142 is provided at one end of the motor housing of the fan assembly 60 near the heating assembly 50, and the porous silencer cover 91 and the motor cover 142 are assembled to form a porous silencer cavity. In specific implementation, the sound absorption coefficient and frequency band of the porous silencer cover 91 can be adjusted by the aperture and the opening ratio according to the spectrum characteristics of the noise.

[0185] In order to further improve the sound absorption capability of the sound-absorbing component, the sound-absorbing component may further include a porous sound-absorbing material 92 filled in the air flow channel. Fig.18 As shown, a porous sound-absorbing material 92 is added to the porous sound-absorbing cavity formed by assembling the porous sound-absorbing cover 91 and the motor cover 142 to increase the sound absorption capacity of the overall structure. When sound waves enter, part of the sound energy is converted into heat energy and dissipated by friction in the pores of the porous material. The surface of the porous sound-absorbing cavity is parallel to the flow direction of the airflow, which does not affect the aerodynamic performance and has no airflow regeneration noise; this structure can effectively reduce the noise in a specific frequency band area, thereby reducing the overall noise accordingly. In specific implementation, the porous sound-absorbing material can be a sound-absorbing sponge.

[0186] It should be added here that: the porous silencer cavity can fill the channel cross-section of the airflow channel, that is, all the airflow coming out of the fan assembly enters the second flow section after passing through the porous silencer cavity; of course, the porous silencer cavity may not fill the channel cross-section of the airflow channel, that is, part of the airflow coming out of the fan assembly enters the second flow section after passing through the porous silencer cavity, and the other part directly enters the second flow section.

[0187] Fig.19 FIG. 2 shows the appearance of a hair dryer provided in an embodiment of the present application. Fig.19As shown, the hair dryer includes a main body 10, a handle 40, an air inlet grille 600 and an exposed part 700. The air inlet grille 600 is arranged at the first air inlet 11 of the air flow channel; the exposed part 700 is located at the air inlet side of the air inlet grille 600; wherein, there is a gap between the exposed part 700 and the air inlet grille 600 for air flow. The air flow enters the gap from the edge of the exposed part 700 and then enters the air inlet grille 600, which helps to reduce noise. The user can hold the hair dryer for blowing by using the handle 40, and the handle 40 is provided with a control unit 218 (see Fig.10 , 11 and 12), the control unit 218 may include: a master control switch 2181, a mode selection switch 400. Among them, the mode selection switch 400 may also include: a cold air mode selection switch 410, a high power mode selection switch 420, etc., which are not specifically limited in this embodiment. A battery assembly is also provided in the handle 40, and the battery assembly is electrically connected to the controller assembly. The battery assembly is configured to provide power to various components of the hair dryer, or the power cord 500 of the hair dryer passes through the handle 40 and is connected to the controller assembly, and the power cord 500 is connected to an external power supply to provide power to various components of the hair dryer.

[0188] The technical solution adopted in this embodiment is described below in combination with specific application scenarios to help understanding. In the following application scenarios, a handheld hair dryer is taken as an example.

[0189] Application Scenario 7

[0190] When the user needs to use the hair dryer, turn on the hair dryer. At this time, the fan assembly of the hair dryer works, forming a negative pressure in the airflow channel to suck in external air. The airflow enters the airflow channel through the first flow section, and flows obliquely into the second flow section under the action of the drainage section; due to the existence of the drainage section, the airflow will not directly hit the windward surface formed by the step difference between the first flow section and the second flow section. During use, users can feel that the hair dryer has low noise and a good user experience.

[0191] Application Scenario 8

[0192] When the user needs to use the hair dryer, turn it on. At this time, the blower assembly of the hair dryer works to form a negative pressure in the air flow channel to inhale the outside air. The air flow enters the air flow channel through the first flow section, and flows obliquely into the second flow section under the action of the drainage section. Due to the existence of the drainage section, the air flow will not directly hit the windward surface formed by the step difference between the first flow section and the second flow section. In addition, since a silencer assembly is provided in the air flow channel, part of the sound waves generated by the air flow enter the pores of the silencer assembly, and are converted into heat energy and dissipated by friction in the pores. During use, the user can feel that the hair dryer has low noise and a good user experience.

[0193] Continue to see Fig.19 , 20 and the example shown in 21, Fig.19 A side view of a hair dryer provided in one embodiment of the present application; Fig. 20 A rear view of a hair dryer provided in one embodiment of the present application; Fig.21 This is an axonometric diagram of a hair dryer provided in one embodiment of the present application. Fig.19 , 20 As shown in Figures 21 and 22, the hair dryer provided in this embodiment includes: a main body 10, an air inlet grille 600 and an exposed part 700. The main body 10 has an air flow channel (not shown in the figure); the air inlet grille 600 is located at the end of the main body, and air enters the air flow channel through the air inlet grille; the exposed part 700 is located at the air inlet side of the air inlet grille 600; there is a gap between the exposed part 700 and the air inlet grille 600 for air flow.

[0194] The technical solution provided in the embodiment of the present application is to set an exposed component 700 on the air inlet side of the air inlet grille 600, and there is a gap between the exposed component 700 and the air inlet grille 600 for gas circulation; the airflow will not directly pass through the air inlet grille 600 into the air flow channel, but first enter the gap between the exposed component 700 and the air inlet grille 600, and then pass through the air inlet grille 600 to the air flow channel, which helps to reduce noise; in addition, the technical solution provided in the embodiment of the present application also avoids the problem of the air inlet grille 600 being completely exposed to the outside, and the appearance of the hair dryer is more beautiful.

[0195] See also Fig.19 and Fig.23 As shown, the exposed component 7000 is protruding from the air inlet surface where the air inlet grille 600 is located, so that the gap includes a first gap D along the plane direction of the air inlet surface and a second gap L along the normal direction of the air inlet surface. The airflow enters the gap from the edge of the exposed component 700, and then passes through the air inlet grille 600 into the air flow channel of the main body 10. The airflow enters the gap from the edge of the exposed component 700 and then enters the air inlet grille 600, which helps to reduce noise.

[0196] In one possible embodiment of the present application, see Fig.19 and Fig.23In one embodiment of the present application, the main body 10 can be realized in the following manner: the main body 10 includes a shell, and various functional components of the hair dryer are arranged in the cavity of the shell, and a first air inlet 11 and a first air outlet 12 are arranged on the shell. An air inlet grid 600 is arranged at the first air inlet 11. The components arranged inside the shell include, but are not limited to, a controller component 130, a heating component 50 connected to the controller component 130, and a fan component 60. The fan component 60 includes a motor for driving the fan and a fan that rotates to generate negative pressure. The fan component 60 is configured to form a negative pressure during operation to suck air from the first air inlet 11 into the air flow channel of the main body 10, and after being heated by the heating component 50, the air is blown out from the first air outlet 12. A handle 40 is also arranged on the main body 10, and the user can hold the hair dryer through the handle 40 to blow air. The handle 40 is provided with a control key connected to the control unit, and the control key can be used to control the hair dryer to perform different functions, for example, to control the hair dryer to blow different sizes of wind. A battery assembly is also provided in the handle 40, and the battery assembly is connected to the controller assembly 130. The battery assembly is configured to provide power to various components of the hair dryer, or the power cord 500 of the hair dryer passes through the handle 40 and is connected to the control unit, and the power cord 500 is connected to an external power supply to provide power to various components of the hair dryer.

[0197] See also Fig. 20 and Fig.21 As shown, in the direction from the first air inlet 11 to the first air outlet 12 of the air flow channel, the exposed component 700 blocks at least a portion of the air inlet grille 600 .

[0198] The exposed component 700 blocks at least part of the air inlet grille 600, which will inevitably affect the gas flow rate per unit time at the first air inlet 11. While reducing noise, the exposed component 700 blocks part of the air inlet grille 600 to minimize the impact on the gas flow rate. Specifically, Fig. 20 As shown, the air inlet grille 600 has an end surface 6001 facing the exposed component 700 ; the edge of the end surface 6001 exceeds the edge of the projection contour of the exposed component 700 on the end surface 6001 .

[0199] More specifically, along the edge of the end surface 6001, the edge of the projection contour of the exposed component 700 on the end surface 6001 maintains a fixed distance from the edge of the end surface 6001. In a specific implementation, the fixed distance (i.e. Fig.19 The gap D) shown in the figure can be a value between 2 and 8 mm, such as 5 mm. Due to the blocking effect of the exposed part 700, the above design allows the gas to evenly enter the air inlet grid 600 from the edge of the exposed part 700, and the air inlet path has certain bends, which helps to reduce noise.

[0200] In order to ensure a certain amount of air intake, the air intake area of ​​the hair dryer needs to be about 1000 to 1400 square millimeters. Because of the shielding of the exposed component 700 in this embodiment, the above air intake area requirement can be met by adjusting the distance between the air intake grid and the exposed component during implementation. For example, Fig.19 and Fig.23 As shown, the distance between the edge of the exposed component 700 and the air inlet grille 600 (i.e. Fig.19 The gap L) shown in FIG. 1 may be a value between 3 and 9 mm, such as 6 mm, 7 mm, etc.

[0201] In actual scenarios, dust will accumulate on the air inlet grille 600 due to long-term use of the hair dryer, and excessive dust accumulation will affect the air intake of the first air inlet. The user needs to clean the air inlet grille 600 regularly. In order to facilitate the user to clean the air inlet grille, the exposed component 700 in this embodiment can also be used as a grip, and the user can easily remove the air inlet grille 600 from the main body 10 by holding the exposed component 700. That is, the exposed component 700 is connected to the air inlet grille 600; the air inlet grille 600 is detachably connected to the main body 10; the exposed component 700 acts as a grip, and under the action of the disassembly force, drives the air inlet grille 600 to be removed from the main body 10.

[0202] In the embodiment of the present application, the air inlet grille 600 can be connected to the main body 10 in a variety of ways. For example, the air inlet grille 600 can be attached to the main body 10 by magnetism, or connected to the main body 10 by threads, or connected to the main body 10 by snaps, etc., which is not specifically limited in the present embodiment.

[0203] Continue to see Fig. 22 As shown, the exposed component 700 is connected to the central portion 63 of the air inlet grille 600; a plurality of air holes 64 are evenly distributed around the central portion 63. Further, the air holes 64 are arc-shaped holes extending from the central portion 63 along an arc to the edge of the air inlet grille 600.

[0204] See also Fig.19 and Fig.23 As shown, in order to allow the airflow to enter the air inlet grille 600 more smoothly, the cross-section of the exposed component 700 is continuously reduced from the first air inlet 11 to the first air outlet 12 to form a guide surface 71, so that the airflow flows into the air inlet grille 600 along the guide surface 71.

[0205] In a feasible technical solution, Fig. 22As shown, the exposed component 700 includes: an exposed panel 72 and a guide plate 73. The guide plate 73 is located between the exposed panel 72 and the air inlet grille 600; the guide plate 73 is provided with the guide surface 71 to guide the airflow to enter from the outer edge of the guide plate 73 and to the air inlet grille 600 along an arc path.

[0206] In the embodiment of the present application, the exposed component 700 and the air inlet grille 600 can be connected by a variety of connection methods, such as welding, screw connection, snap connection with a snap-on and a slot, etc.; or, the exposed component 700 and the air inlet grille 600 are an integrally formed structure.

[0207] Continue to see Fig. 22 As shown, Fig. 22 An exemplary connection method is shown, namely, a first structure 61 having a positioning function is provided on the end face of the air inlet grille 600 facing the exposed component 700; the exposed component 700 maintains a positional relationship with the air inlet grille 600 through the first structure 61; after the positional relationship between the air inlet grille 600 and the exposed component 700 is fixed, they are connected via a connecting component 80.

[0208] More specifically, the air inlet grille 600 is provided with a connecting through hole 62; on the end surface of the air inlet grille 600 facing the exposed component 700, positioning posts 611 are respectively provided at both ends of the hole diameter of the connecting through hole 62; the exposed component 700 is provided with a positioning hole 74 adapted to the positioning post 611, and a connecting blind hole 75 (such as Fig.24 The connecting component 80 passes through the connecting through hole 62 and enters the connecting blind hole 75 to connect the air inlet grille 600 and the exposed component 700.

[0209] Further, such as Fig.19 As shown, the end surface of the air inlet grille 600 facing the exposed component 700 is a curved surface. Similarly, the end surface of the exposed component 700 facing away from the air inlet grille 600 can also be a curved surface. The curved surface design is not only aesthetically pleasing, but also helps to reduce the noise of the whole machine.

[0210] Further, such as Fig.23 As shown, the main body 10 in this embodiment may further include a nozzle 230, which is detachably connected to the first air outlet 12 of the air flow channel of the main body 10. The nozzle 230 can concentrate the airflow blown out from the first air outlet 12 to meet the user's usage needs in specific scenarios (such as hair shaping).

[0211] The technical solution adopted in this application is described below in combination with specific application scenarios to help understanding. In the following application scenarios, a hair dryer is taken as an example as a handheld hair dryer.

[0212] Application Scenario 9

[0213] When the user needs to use the hair dryer, the hair dryer is turned on. At this time, the fan assembly of the hair dryer works, forming a negative pressure in the air flow channel to suck in external air, and the air flow from the rear side of the hair dryer enters the gap between the exposed component and the air inlet grille, and then enters the air flow channel through the air inlet grille, and is heated by the heating assembly before being blown out from the first air outlet 12. The air flow does not directly enter the interior of the main body through the air inlet grille, which helps to reduce noise. The user can feel that the hair dryer has low noise and a good user experience.

[0214] Application Scenario 10

[0215] When using a hair dryer, the user may find that there is a lot of dust on the air inlet grille of the hair dryer. At this time, the user can hold and rotate the exposed part, and the air inlet grille can be removed from the main body of the hair dryer. After the air inlet grille is removed, the user can use water or a brush to clean it. After cleaning, the user holds the exposed part, puts the air inlet grille in the connection position, and then rotates the air inlet grille to install it on the main body.

[0216] When the inventor uses an existing hair dryer, he turns on the hair dryer to blow his hair, and after a while he feels that it is too hot or too cold; then he looks at the corresponding controls on the hair dryer to change the mode of the hair dryer by adjusting the controls. That is, the user experience of the existing hair dryer is not good. In response to the above problem, the present application provides the following embodiment, where the user can judge whether the hair dryer is blowing cold air or hot air without touching the air outlet.

[0217] Fig.25 This is a schematic diagram of the structure of a hair dryer provided in one embodiment of the present application. Fig.25 As shown, this embodiment provides a hair dryer, including: a main body 10 and an indicator assembly 250. The end of the main body 10 has a first air inlet 11. The indicator assembly 250 surrounds the end of the main body 10 and is electrically connected to the main body 10, wherein the indicator assembly 250 displays different indicator marks in response to the air outlet temperature of the hair dryer.

[0218] The technical solution provided by the embodiment of the present application is that the indicator component 250 electrically connected to the main body 10 can display different indicator marks in response to different air outlet temperatures of the main body 10, so that the user can know the air outlet temperature of the main body 10 according to different indicator marks. The user can judge the air outlet temperature according to the different indicator marks without touching the air outlet of the hair dryer. The method is simple and intuitive, and potential harm to the user is avoided when the hair dryer blows out hot air.

[0219] In one possible embodiment of the present application, see Fig.25 and Fig.26 In one embodiment of the present application, the main body 10 can be realized in the following manner: the main body 10 includes a shell, the cavity of the shell is provided with various functional components of the hair dryer, and the shell is provided with a first air inlet 11 and a first air outlet 12. The first air inlet 11 is provided with an air inlet assembly 300. In a specific embodiment, the air inlet assembly 300 may include at least: Fig.19 The exposed parts 700 and the air inlet grid 600 in the housing are shown in FIG. 1 . The components arranged inside the housing include, but are not limited to, the controller assembly 130 and the heating assembly 50 connected to the controller assembly 130, the fan assembly 60, etc. The fan assembly 60 includes a motor for driving the fan and a fan that rotates to generate negative pressure. The fan assembly 60 is configured to form a negative pressure during operation to suck air from the first air inlet 11 into the main body 10, and after being heated by the heating assembly 50, it is blown out from the first air outlet 12. The main body 10 is also provided with a handle 40, through which the user can hold the hair dryer for blowing. The handle 40 is provided with a control button connected to the controller assembly 130, and the control button can be used to control the hair dryer to perform different functions, for example, to control the hair dryer to blow different sizes of wind. The handle 40 is also provided with a battery assembly, which is connected to the controller assembly 130. The battery assembly is configured to provide power to other components, or the power cord of the hair dryer passes through the handle 40 and is connected to the controller assembly 130, and the power cord is connected to an external power supply to provide power to other components.

[0220] In an embodiment of the present application, the indicator component 250 can be set at different positions on the main body 10 so that the user can easily and intuitively see the indicator mark, for example, the side of the main body 10, the side of the main body 10 away from the handle 40, or the indicator component 250 can also be set on the handle 40. In an achievable embodiment, the indicator component 250 is an annular structure, and the airflow entering through the first air inlet 11 can pass through the annular structure. The indicator component 250 with an annular structure can save space, and the interior of the annular structure can be used to set other components of the hair dryer, for example, for setting the fan component 60, and the ventilation channel of the hair dryer can pass through the annular structure. At the same time, the indicator component 250 with an annular structure has a wide range of display indicators. When using a hair dryer, the user often changes various angles to blow his hair. The indicator component 250 with an annular structure can make it convenient for the user to observe the indicator mark at all angles.

[0221] At the same time, the airflow entering through the first air inlet 11 can pass through the annular structure, and the airflow entering through the first air inlet 11 can blow through the annular structure, thereby taking away the heat generated by the indicating component 250 when working, thereby increasing the service life of the indicating component 250.

[0222] Furthermore, the outer surface of the indicator component 250 is flush with the outer surface of the main body 10. From the appearance, the indicator component 250 and the main body 10 are viewed as a whole, making the overall appearance of the hair dryer more beautiful. At the same time, the indicator component 250 does not protrude from the outer surface of the main body 10, avoiding excessive wear of the indicator component 250 and increasing the service life of the indicator component 250.

[0223] Further, in an achievable embodiment of the present application, the outer surface of the indication component 250 includes at least two light emitting surfaces, wherein at least one light emitting surface extends along the normal direction of the first air inlet 11, and at least one light emitting surface extends along the circumferential direction around the main body 10. When the indication component 250 is displayed, it can be displayed in at least two directions, and the user can view the indication along the normal direction of the first air inlet 11 and the circumferential direction of the main body 10, which is convenient for the user to view without adjusting the angle, and is convenient for the user to use.

[0224] In the embodiment of the present application, one possible implementation of the indication component 250 is: Figures 26 to 28 , the indicating assembly 250 includes a lamp board 210. The lamp board 210 includes but is not limited to a ring structure. The lamp board 210 includes a PCB (Printed Circuit Board) board and an LED (Light Emitting Diode) light source arranged on the PCB board. The PCB board is electrically connected to the main body 10, and the main body 10 provides power for the lamp board 210. The lamp board 210 can be arranged on the surface of the main body 10, or a light-transmitting hole is arranged on the main body 10, and the lamp board 210 can emit light outward through the light-transmitting hole. The indicating mark of the indicating assembly 250 includes but is not limited to the color of the light emitted by the LED light source. For example, when the light is blue, it means that the main body 10 blows out cold air. When the light turns to red, it means that the main body 10 blows out hot air. Alternatively, the light has a gradual change process. When the light is blue, it means that the main body 10 blows out cold air. When the color of the light gradually turns to red, it means that the air blown out by the main body gradually becomes hotter. When the air outlet temperature exceeds a certain temperature, the light stops changing and stays in red. The indicator mark of the indicator component 250 can also indicate different outlet air temperatures by lighting up light sources at different positions. For example, multiple LED light sources are arranged in a circle, and different outlet air temperatures are indicated when light sources at different positions are lit. The indicator mark of the indicator component 250 can also indicate different outlet air temperatures by lighting up different numbers of light sources. For example, the fewer the number of light sources that are lit, the lower the outlet air temperature. It should be noted that the implementation method of the indicator mark of the indicator component 250 described above can be implemented separately or in combination with each other, and the embodiments of the present application do not make specific limitations.

[0225] In order to make the light panel 210 emit light more uniformly, in the embodiment of the present application, Figures 26 to 30 , the indicating assembly 250 also includes a light guide 220. The light guide 220 includes but is not limited to an annular structure. The light guide 220 can conduct the light of the light board 210, and make the light more uniform, thereby increasing the quality of the product. It should be noted that the light guide 220 is an annular structure, which means that the overall shape of the light guide 220 is an annular structure that matches the light board 210. In order to achieve the transmission of light, one possible way of implementing the light guide 220 is that the light guide 220 has an abutment portion 221 and a light guide portion 222, the abutment portion 221 abuts against the light board 210, the light guide portion 222 extends a certain length along the longitudinal direction of the main body 10, one end of the light guide portion 222 is connected to the abutment portion 221, and the other end has a light emitting surface. In order to match the annular structure of the light board 210, the abutment portion 221 is an annular structure that matches the shape of the light board 210, and the light guide portion 222 can be understood as a cylindrical structure. The abutting portion 221 and the light guiding portion 222 may be an integrally formed structure.

[0226] The light guide 220 is made of a light diffusing material or a fully transparent material, for example, made of a light diffusing or fully transparent PC (Polycarbonate) material. In the case of having a light guide 220, the light board 210 can be arranged not only on the surface of the main body 10, but also inside the main body 10, and the light emitted by the light board 210 is transmitted to the surface of the main body 10 through the light guide board. One achievable way is that the indicating assembly 250 includes a light board 210 and a light guide 220, and both the light board 210 and the light guide 220 are annular structures. Here, the light guide 220 being annular structure can also be understood as the light guide 220 being a cylindrical structure. An annular accommodating cavity 135 is arranged in the main body 10 at the end having the first air inlet 11. The light board 210 is located in the accommodating cavity 135 and is electrically connected to the main body 10. One end of the light guide 220 extends into the accommodating cavity 135 and abuts against the light board 210, and the other end extends out of the accommodating cavity 135 to the indication area of ​​the main body 10. The indication area includes but is not limited to the outer surface of the end of the main body having the first air inlet 11. The light emitted by the light board 210 enters the light guide 220 from one end of the light guide 220, is conducted by the light guide 220, and is emitted from the other end of the light guide 220, so that the light is emitted from the outer surface of the main body 10.

[0227] The light board 210 and the light guide 220 are both annular structures, which can effectively save the internal space of the hair dryer. The interior of the annular structure can be used to set other components of the hair dryer, such as the fan assembly 60. The ventilation channel of the hair dryer can pass through the annular structure, and the airflow entering through the first air inlet 11 can pass through the annular structure. The airflow entering through the first air inlet 11 can blow through the annular structure, thereby taking away the heat generated by the indicator assembly 250 when it is working, thereby increasing the service life of the indicator assembly 250. At the same time, the light guide 220 with an annular structure has a wide range of display indication marks. When using a hair dryer, the user often changes various angles to blow the hair. The light guide 220 with an annular structure can make it convenient for the user to observe the indication mark at all angles.

[0228] Furthermore, in order to protect the end of the light guide 220 extending out of the accommodating cavity 135, the outer periphery of the end of the light guide 220 located on the outer surface of the main body 10 is covered with a decorative cover 23. The decorative cover 23 can protect the light guide 220 on the one hand, and on the other hand, the decorative cover 23 can further play the role of guiding light, so that the light is more uniform. The decorative cover 23 can be designed according to the appearance of the main body 10, so that the overall appearance of the hair dryer is more beautiful. For example, the accommodating cavity 135 is located inside the end of the main body 10 with the first air inlet 11, and the accommodating cavity 135, the lamp board 210, the light guide 220 and the decorative cover 23 are all annular structures. The main body 10 is a cylindrical structure, the accommodating cavity 135 is arranged along the circumference of the main body 10, the lamp board 210 of the annular structure is arranged in the accommodating cavity 135, and the light guide 220 and the decorative cover 23 are all around the main body 10. When in use, the lamp board 210 emits light, and the light is transmitted to the decorative cover 23 through the light guide 220. From the appearance of the main body 10, it can be seen that there is an aperture on the outer surface of the main body 10. According to the different colors of the aperture, it can be judged whether the hair dryer blows hot air or cold air. The aperture surrounds the outer circumference of the main body 10, which is convenient for users to watch. The difference is that the angle can be adjusted to watch, which is convenient for users to use.

[0229] Further, see Fig.29 and Fig.30In the embodiment of the present application, the lamp board 210 has a plurality of lamp beads on one side facing the light guide 220, and the plurality of lamp beads are distributed in a ring on the lamp board 210. The light guide 220 includes an abutting portion 221 and a light guide portion 222 arranged on the abutting portion 221. The abutting portion 221 abuts against the lamp board 210, and a plurality of grooves 2211 are arranged on the abutting portion 221, and each groove 2211 accommodates at least one lamp bead. The light guide portion 222 extends from the accommodating cavity 135 to the indication area of ​​the main body 10. The indication area includes but is not limited to the outer surface of the end of the main body having the first air inlet 11. Among them, the lamp board 210 is located in the accommodating cavity 135, and the abutting portion 221 of the light guide 220 is used to abut against the lamp board 210, so the abutting portion 221 needs to extend into the accommodating cavity 135 to abut against the lamp board 210. The light guide portion 222 of the light guide body 220 needs to transmit the light emitted by the lamp board 210 to the outer surface of the main body 10, so the light guide portion 222 needs to extend out of the accommodating cavity 135 to the outer surface of the main body 10. At the same time, the portion of the light guide portion 222 extending to the outer surface of the main body 10 is flush with the outer surface of the main body 10, so that the light guide portion 222 does not protrude from the outer surface of the main body 10, thereby avoiding excessive wear of the light guide portion 222 and increasing the service life of the light guide portion 222.

[0230] The outer surface of the light guide 222 includes at least two light emitting surfaces, wherein at least one light emitting surface extends along the normal direction of the first air inlet 11, and at least one light emitting surface extends along the circumferential direction around the main body 10. When the light guide 222 displays the indicator, it can be displayed in at least two directions, and the user can view the indicator along the normal direction of the first air inlet 11 and the circumferential direction of the main body 10, which is convenient for the user to view without adjusting the angle, and is convenient for the user to use.

[0231] The groove 2211 on the abutting portion 221 can act as a lens. The light emitted by the lamp beads can be more concentrated through the refraction of the groove 2211, and then transmitted to the outer surface of the main body 10 through the light guide portion 222. The light is emitted from the light guide portion 222 more evenly, avoiding the situation of dim light. The end of the light guide portion 222 away from the abutting portion 221 has an undulating structure, which can improve the strength of the connection with the decorative cover 23 and increase the aesthetics.

[0232] Furthermore, the groove 2211 includes but is not limited to a hemispherical structure. It should be noted that the shape of the groove 2211 can be set according to different light output requirements. In the embodiment of the present application, the groove 2211 is not limited to a hemispherical structure, and the groove 2211 can also be other shapes, such as an elliptical structure, a saddle structure, an 8-shaped structure, etc.

[0233] In the embodiment of the present application, the light guide 220 can be connected to the main body 10 in a variety of ways. One possible way is to continue to refer to Fig.29 and Fig.30 , a plurality of first clamping parts 223 are arranged on the abutting part 221 and / or the light guiding part 222, and a plurality of second clamping parts are arranged at positions corresponding to the first clamping parts 223 in the accommodating cavity 135. The first clamping part 223 is connected to the second clamping part so that the light guide 220 is connected in the accommodating cavity 135. The first clamping part 223 includes but is not limited to being a protrusion, and the second clamping part includes a groove 2211 used in conjunction with the protrusion. Or the first clamping part 223 is a groove 2211, and the second clamping part is a protrusion. The installation position of the light guide 220 can be fixed by the first clamping part 223 and the second clamping part, and the light guide 220 can be simply and quickly installed on the main body 10.

[0234] Further, see Fig.29 and Fig.30 In order to prevent the light emitted by the light board 210 from becoming weaker when it is transmitted through the light guide 220, in the embodiment of the present application, the abutment portion 221 and part of the surface of the light guide portion 222 are covered with a light shielding layer 224. The light shielding layer 224 can be provided on the surface of the light guide 220 that does not need light input and light output, so that the light cannot be transmitted from the portion with the light shielding layer 224, and can only be transmitted from the portion where the light shielding layer 224 is not provided. For example, the light shielding layer 224 can be provided on the remaining area of ​​the abutment portion 221 except the groove, and on the area of ​​the light guide portion 222 except the light output surface. When the light guide 220 transmits light, the light can only propagate along the set optical path, preventing the light from diverging and the light intensity from becoming weaker. To prevent the light shielding layer 224 from absorbing light, the light shielding layer 224 can be made of a reflective material, which is coated on the light guide 220 to form the light shielding layer 224. The light shielding layer 224 can reflect light on one side facing the inside of the light guide 220 to prevent light from being absorbed. The reflective material includes but is not limited to aluminum.

[0235] The technical solution adopted in the present application is described below in combination with specific application scenarios to help understanding. In the following application scenario, a hair dryer is a handheld hair dryer and the indicator is a light as an example.

[0236] Application Scenario 11

[0237] When the user needs to use the hair dryer, the user turns on the hair dryer. At this time, the user does not need to touch the air outlet of the hair dryer with his hands. The user only needs to look at the color of the light of the indicator component on the hair dryer to determine whether the air outlet of the hair dryer is cold air or hot air.

[0238] When the light is blue, it means the subject is blowing out cool air. When the light turns red, it means the subject is blowing out hot air.

[0239] Application Scenario 12

[0240] When the user needs to use the hair dryer, the user turns on the hair dryer. At this time, the user does not need to touch the air outlet of the hair dryer with his hands. The user only needs to look at the color of the light of the indicator component on the hair dryer to determine whether the air outlet of the hair dryer is cold air or hot air.

[0241] When the light is blue, it means that the main body blows out cold air. When the light gradually changes from blue to red, it means that the air blown out by the main body gradually becomes hotter, until the outlet air temperature exceeds a certain temperature, the light stops changing and stays in red. When the light turns red, it means that the main body blows out hot air.

[0242] Fig.31 This is a schematic diagram of the internal structure of the handle of a hair dryer provided in one embodiment of the present application. Fig.19 , 20 , 21 and 31, the hair dryer provided in this embodiment includes: a main body 10 and a handle 40. It should be noted that in the embodiment of the present application, the hair dryer is a handheld hair dryer.

[0243] The main body 10 has a first air inlet 11 and a first air outlet 12. The main body 10 may include a shell, and various functional components of the hair dryer are arranged in the inner cavity surrounded by the shell, and the first air inlet 11 and the first air outlet 12 are arranged on the shell. The functional components arranged inside the shell include but are not limited to a controller component 130 and a heating component 50 connected to the controller component 130, a fan component 60, etc. Specifically, as mentioned above, the controller component 130 may include a main control board. The fan component 60 includes a motor for driving a fan and a fan that rotates to generate negative pressure. The fan component 60 is configured to form a negative pressure when working to suck air from the first air inlet 11 into the main body 10, and blow it out from the first air outlet 12 after being heated by the heating component 50.

[0244] The handle 40 is connected to the main body 10. The extension direction of the handle 40 can be perpendicular to the direction of the line connecting the first air inlet 11 and the first air outlet 12. As a preferred embodiment, the handle 40 can also rotate relative to the main body 10 so that the handle 40 can be switched between a folded position and an unfolded position for easy storage of the hair dryer.

[0245] In this embodiment, preferably, the handle 40 of the hair dryer of this embodiment can be cylindrical. The cylindrical handle 40 is convenient for the user to hold, has a good hand feel, and is also beautiful.

[0246] The handle 40 is provided with a first switch and a second switch. The operating surface of the first switch is perpendicular to the line connecting the first air inlet 11 and the first air outlet 12 (eg Fig.19The first switch and the second switch in this embodiment can be any function selection switches, which are not limited in this embodiment. The structure and function of the hair dryer in this embodiment are described below by taking the first switch as the master control switch 2181 and the second switch as the mode selection switch 400 as an example, wherein the master control switch 2181 is used to control the start or stop of the hair dryer, and the mode selection switch 400 is used for the user to select the working mode of the hair dryer.

[0247] Generally, for mainstream users, according to the user's holding habits, the user holds the hair dryer handle 40 with the right hand, and the user blows the hair with the hair dryer facing the head, the first air outlet 12 is located on the left side of the main body 10, and the first air inlet 13 is located on the right side of the main body 10. Looking at the handle 40 from top to bottom, the user holds the handle 40 counterclockwise with four fingers, the thumb rests on the side of the handle 40 close to the first air inlet 13, and the free ends of the other four fingers are located on the side of the handle 40 facing the user. Taking the first switch as the master control switch 2181 and the second switch as the mode selection switch 400 as an example, the master control switch 2181 is arranged on the side of the handle 40 facing the first air inlet 11, and the mode selection switch 400 is located on the side of the handle 40 facing the user, that is, the operating direction of the operating surface of the mode selection switch 400 is perpendicular to the line connecting the first air inlet 11 and the first air outlet 12. The first switch and the second switch are arranged separately, the layout is reasonable, in line with the user's usage habits, and easy to operate.

[0248] It should be noted that the operating surfaces of the first switch and the second switch refer to the switch surfaces that are touched by the fingertips of the user when operating the switches.

[0249] In addition, for the convenience of explanation, the following description is based on the first switch as the master switch and the second switch as the mode selection switch to more clearly express the effect of the present technical solution. It can be understood by those skilled in the art that the designer can set the first switch and the second switch as other function switches as needed, and this embodiment is not limited. In this embodiment, the distance from the master switch 2181 to the main body 10 can be 24mm to 30mm. More preferably, the distance from the master switch 2181 to the main body 10 is 27mm. After continuous experiments and calculations, the inventor selected 27mm as the most suitable distance between the master switch 2181 and the main body 10. In this way, when the user's hand is held up to the maximum extent, the thumb is held on the lower side of the switch, and the master switch 2181 will not be touched, resulting in an uncomfortable feeling. When the thumb is raised, it can just touch the master switch 2181, which is convenient, fast, and comfortable to operate.

[0250] Furthermore, the master switch 2181 can be a push button. The master switch 2181 has two switching positions, OFF position (off position) and ON position (start position), and the ON position can be located above the OFF position. When in use, the user pushes the master switch 2181 upward, so that the master switch 2181 switches to the ON position, and the hair dryer starts. When the user pushes the master switch 2181 back downward, the master switch 2181 switches to the OFF position, and the hair dryer turns off. Of course, in other embodiments, the ON position can be located below the OFF position. When in use, the user pushes the master switch 2181 downward, so that the master switch 2181 switches to the ON position, and the hair dryer starts. When the user pushes the master switch 2181 back upward, the master switch 2181 switches to the OFF position, and the hair dryer turns off. Since the user's thumb is in a vertical position when holding the handle 40, in this embodiment, the master switch 2181 is designed as a push button, which is more in line with the human hand structure, more conducive to thumb operation, and in line with the user's operating habits.

[0251] In addition, for ease of operation, an anti-slip protrusion is provided on the outer surface of the master control switch 2181 so that the user can operate the master control switch 2181 more easily.

[0252] Optionally, in this embodiment, the position of the master switch 2181 and the position of the mode selection switch can be perpendicular to each other. The appearance of the entire hair dryer is more regular and beautiful.

[0253] The number of mode selection switches is not limited and can be specifically set according to the function of the hair dryer. Users can choose the hair dryer to work in different modes by triggering different mode selection switches, which complies with the intelligent selection function of the hair dryer and can flexibly meet user needs.

[0254] Specifically, in this embodiment, the mode selection switch 400 may include two, and the master control switch 2181 may be at an equal distance from the two mode selection switches 400. So that the connection line between the master control switch 2181 and the two mode selection switches 400 can form an isosceles triangle. The distance between the two mode selection switches can be 13mm to 19mm. In this embodiment, preferably, the distance between the two mode selection switches is 16mm. The inventor has conducted experiments and found that when the distance between the two mode selection switches is 16mm, when the user operates with one hand, it can avoid accidental touch and can avoid the inconvenience caused by the distance between the two. The hair dryer provided in the embodiment of the present application includes a main body and a handle, the main body is provided with a first air inlet and a first air outlet, the handle of the hair dryer is provided with a first switch and a second switch, the operating surface of the first switch faces the first air inlet, and the operating direction of the operating surface of the second switch is perpendicular to the line connecting the first air inlet and the first air outlet, so that when the user holds the handle, the thumb can just touch the first switch, the first switch is operated by the thumb, and the free ends of the four fingers can just touch the second switch, and the second switch is selected by four fingers, which is easy to operate, conforms to the user's operating habits, realizes functional zoning, has a reasonable layout, prevents misoperation, and can effectively improve the user experience.

[0255] Specifically, Fig.19 As shown, the first air outlet 12 can be located on the left side of the mode selection switch 400, and the first air inlet 11 is located on the right side of the mode selection switch 400. It should be noted that generally, when a user holds the hair dryer, they all hold it with their right hand. In this way, when the user holds the hair dryer, the mode selection switch 400 is located on the side of the handle 40 visible to the user in the right hand holding state, so it is convenient for the user to select the operation without turning the hair dryer over to select the mode selection switch 400 and then use it normally. The operation is convenient and the user experience is good.

[0256] Fig.32 This is a control principle diagram of the hair dryer provided in the embodiment of the present application. Fig.32As shown, in this embodiment, a controller component 130 and a heating component 50 and a fan component 60 electrically connected to the controller component 130 may be provided in the main body 10. It should be noted that in the embodiment of the present application, in order to realize that the controller component 130 controls the heating component 50 and the fan component 60, a control circuit for controlling the working state of the heating component 50 and the fan component 60 may be provided on the controller component 130. Through the control circuit, the controller component 130 can control the fan component 60 in various working states, for example, control the start and stop of the fan component 60, control the power of the motor driving the fan, and control different speeds to achieve the wind force blown out by the fan component 60, and control the fan component 60 to blow out strong wind, breeze and other states. Of course, the control of wind force is not limited to strong wind and breeze, and various wind forces can be controlled according to different needs. The controller component 130 can also control various working states of the heating component 50, for example, control the start and stop of the heating component 50, control the current of the heating component 50 so that the heating component 50 outputs at maximum power, and control the temperature of the heating component 50, so that the air output becomes hot air, slightly hot air, etc., so that the hair dryer works in different working modes.

[0257] It should be noted that when only the master control switch 2181 is triggered to start the hair dryer, the hair dryer can be in a preset default working mode, for example, the heating component 50 is in a slightly hot air state, and the fan component 60 is in a light wind state. If the user needs to change the working mode, the current working mode of the hair dryer can be changed by triggering different mode selection switches. Of course, it is understandable that the default working mode of the hair dryer is not limited to the above description, and those skilled in the art can set it specifically according to actual conditions. This embodiment is only an example.

[0258] Based on the above embodiment, specifically, the mode selection switch 400 may include a cold wind mode selection switch 410. The cold wind mode selection switch 410 may be electrically connected to the controller component 130, and is used for the controller component 130 to control the heating component 50 not to heat up when the cold wind mode selection switch 410 is closed. It should be noted that the closing method of the cold wind mode selection switch 410 may be a pressing method, and the cold wind mode selection switch 410 may be a pressing switch. After the user presses the cold wind mode selection switch 410, the controller component 130 receives the signal, thereby controlling the heating component 50 not to heat up. The specific method of controlling the heating component 50 not to heat up may be to cut off the circuit connected to the heating component 50, or to control the current of the heating component 50 to be zero. At this time, the wind force of the fan component 60 may remain unchanged, that is, the wind force in the default working mode only makes the hair dryer blow out cold wind to meet the user's demand for using cold wind to dry hair in hot weather.

[0259] The mode selection switch 400 may also include a high-power mode selection switch 420. The high-power mode selection switch 420 is electrically connected to the controller component 130, and is used for the controller component 130 to control the fan component 60 to switch to the maximum power operation when the high-power mode selection switch 420 is closed, and to control the heating component 50 to heat at the maximum power. It should be noted that the closing mode of the high-power mode selection switch 420 can be a pressing mode, and the high-power mode selection switch 420 can be a press switch. After the user presses the high-power mode selection switch 420, the controller component 130 receives the signal, thereby controlling the motor of the fan component 60 to run at the maximum power, so that the fan can rotate at the maximum speed and blow out the maximum wind force, and the heating component 50 can be controlled to pass the maximum current, so that the heating component 50 heats at the maximum power, and the hair dryer blows out the hottest air to meet the user's needs for quick hair drying.

[0260] In the prior art, when a user needs to adjust the temperature, the user needs to frequently adjust the temperature manually according to the user's perception, which requires too many operations and poor user experience. In this embodiment, the mode selection switch 400 replaces the temperature control switch of the prior art, which can effectively reduce the number of times the user presses the switch. The mode selection switch 400 can be adjusted to the desired position by operating it once, which can effectively improve the user experience.

[0261] The cold air mode selection switch 410 and the high power mode selection switch 420 can be arranged vertically along the extension direction of the handle 40, specifically, the cold air mode selection switch 410 can be located above the high power mode selection switch 420, or the cold air mode selection switch 410 can be located below the high power mode selection switch 420. When the distance between the cold air mode selection switch 410 and the high power mode selection switch 420 is 16 mm, when the distance between the master control switch 2181 and the main body 10 is 27 mm, the distance between the upper mode selection switch and the main body 10 is 19 mm, and the distance between the lower mode selection switch and the main body 10 is 35 mm.

[0262] The number of mode selection switches in this embodiment can also be multiple. Designers in this field can add multiple intelligent selections according to the number of mode selection switches to meet the user's needs for multiple hair drying methods, which are not listed one by one in this embodiment.

[0263] In addition, if Fig.19 As shown, an indicator light may also be provided on the front wall 2100 of the handle 40, and the indicator light may be electrically connected to the controller assembly 130. When the controller assembly 130 controls the hair dryer to be in different working modes, the indicator light may illuminate in different states.

[0264] Specifically, for example, the indicator light can be displayed in different colors and / or illuminated at different brightnesses, or, if there are multiple indicator lights, the more indicator lights that illuminate, the greater the wind force blown out. Specifically, when the hair dryer is started, the indicator light can emit yellow light by default, when the cold wind mode selection switch 410 of the hair dryer is triggered, the indicator light can emit green light, and when the high-power mode selection switch 420 of the hair dryer is triggered, the indicator light can emit red light. At the same time, the luminous intensity of the indicator light can be changed according to the wind force of the hair dryer. When there are multiple indicator lights, for example, there are three vertically arranged indicator lights, when the hair dryer has the lowest wind force, only one indicator light can be illuminated, when the wind force is medium, two indicator lights can be illuminated, and when the hair dryer has the highest wind force, all three indicator lights can be illuminated.

[0265] Furthermore, a battery assembly is also provided in the handle 40, and the battery assembly is connected to the controller assembly 130. The battery assembly is configured to provide electrical energy to the controller assembly 130, the heating assembly 50 and the fan assembly 60, or the power cord 500 of the hair dryer passes through the handle 40 and is connected to the controller assembly 130, and the power cord is connected to an external power source to provide electrical energy to the controller assembly 130, the fan assembly 60 and the heating assembly 50.

[0266] The technical solution adopted in this application is described below in combination with specific application scenarios to help understanding. In the following application scenarios, a hair dryer is taken as an example as a handheld hair dryer.

[0267] Application Scenario 13

[0268] When the user holds the handle of the hair dryer, the user's thumb can be just located on the side of the handle of the hair dryer facing the first air inlet. The user's thumb is raised, that is, it directly touches the master control switch, and the master control switch is turned on so that it is in the ON position. The hair dryer works in the default working mode. When the user needs the hair dryer to blow cold air, the four fingers of the user holding the hair dryer can directly touch the mode selection switch position on the side of the handle, press the cold air mode selection switch, and the hair dryer works in the cold air mode to improve comfort. When the user needs to dry the hair quickly, any of the four fingers of the user can press the high-power mode selection switch to make the hair dryer blow with the hottest air and the maximum wind force. During the entire operation process, in the holding state, each switch on the handle can be touched, and the user does not need to change the holding state to select the switch, thereby effectively improving the user experience.

[0269] When using existing hair dryers, users are still bothered by the loud noise. The noise of the hair dryer is mainly generated by the fan assembly. When the fan assembly is running, due to the high-speed rotating mechanical movement and high-speed airflow, a large noise is generated, and it is concentrated in the medium and high frequency bands, which reduces the comfort of use. The inventor believes that when the current hair dryer product is working, the noise generated by the fan in the hair dryer can pass through the gap between the solid parts on the hair dryer and the air inlet grid without hindrance, and the grid holes on the air inlet grid are transmitted to the outside, so that the noise can be transmitted from the first air inlet of the hair dryer, so that the user can hear it, thereby reducing the user's comfort.

[0270] In response to the above problems, the present application provides the following embodiments, which can reduce the overall noise of the hair dryer, especially the medium and high frequency noise, without affecting the performance while improving product quality and improving user comfort.

[0271] Fig.33 This is a schematic diagram of the exploded structure of a hair dryer provided in one embodiment of the present application. Fig.34 This is a schematic diagram of the planar structure of a front cover provided in an embodiment of the present application. Fig.35 A schematic diagram of the three-dimensional structure of a front cover plate provided in an embodiment of the present application is shown in FIG. Figure 33 to Figure 35 shown.

[0272] In one embodiment of the present application, a hair dryer is provided, which has an air flow channel (not shown in the figure) including a first air inlet 11 and a first air outlet 12, wherein the first air inlet 11 has an air inlet surface, and air enters the air flow channel through the air inlet surface and flows out from the first air outlet 12. The hair dryer includes an exposed component 700 protruding from the air inlet surface, and the exposed component 700 includes a front cover plate 710 facing the air inlet surface and a rear cover plate 720 facing away from the air inlet surface, and a first muffler hole 711 is provided on the front cover plate 710 to guide noise into a first muffler cavity formed by the front cover plate 710 and the rear cover plate 720.

[0273] According to the technical solution provided in the embodiment of the present application, a first silencer hole 711 is provided on the front cover plate 710, and the front cover plate 710 and the rear cover plate 720 form a first silencer cavity. Noise can be guided into the first silencer cavity through the first silencer hole 711. The first silencer cavity can effectively absorb the noise propagated from the hair dryer, especially the medium and high frequency noise, to achieve the purpose of noise reduction, so as to reduce the overall noise of the hair dryer, do not affect the performance, improve the product quality while improving the user comfort.

[0274] For example, in the embodiment of the present application, the hair dryer includes a main body 10, the main body 10 has an air flow channel, the exposed component 700 is located on the air inlet side of the air flow channel and is arranged protruding from the air inlet surface, and the exposed component 700 at least partially blocks the first air inlet 11, so that the noise propagating from the inside of the main body 10 to the outside partially enters the first silencing cavity through the first silencing hole 711. The first silencing cavity can effectively absorb the noise propagating from the main body 10 to the rear of the hair dryer, especially the medium and high frequency noise, so as to achieve the purpose of noise reduction, without affecting the performance of the hair dryer, while improving the product quality and the user's comfort.

[0275] In the embodiment of the present application, one possible air intake method of the first air inlet 11 is that there is a gap between the front cover 710 and the air inlet surface for air flow, and the air flow enters the air flow channel through the gap. The air flow will not directly enter the air flow channel through the air inlet surface, but will first enter the gap between the front cover 710 and the air inlet surface, and then enter the air flow channel. The front cover 710 at least partially blocks the air inlet surface. Due to the blocking effect of the front cover 710, the air flow can evenly enter the air flow channel from the edge of the front cover 710. The air inlet path of the air flow has certain bends, which helps to reduce noise. This air intake method of the first air inlet 11 can minimize the impact on the gas flow rate while reducing noise. At the same time, the front cover 710 also avoids the problem of the air inlet surface being exposed to the outside, making the hair dryer more beautiful in appearance.

[0276] See also Figure 33 to Figure 35 In the embodiment of the present application, one possible implementation of the front cover 710 is that there are multiple first silencer holes 711, and the multiple first silencer holes 711 are evenly distributed around the central part of the front cover 710. The front cover 710 is connected to the rear cover 720 to form a first silencer cavity, and the first silencer cavity is connected to the outside through the first silencer hole 711. The noise can be guided into the first silencer cavity through the first silencer hole 711, and the silencer can be preliminarily achieved through the structure of the first silencer hole 711. The size of the first silencer hole 711 is small, and it has a suppressive effect on medium and high frequency sound waves. When the noise passes through the first silencer hole 711, especially when the medium and high frequency noise passes through the first silencer hole 711, the first silencer hole 711 will exert a certain silencer resistance on the sound wave, and the sound energy of the medium and high frequency noise is converted into heat energy and dissipated by friction in the pores of the first silencer hole 711, so that the sound waves passing through the first silencer hole 711 are weakened. At the same time, since the size of the first muffler hole 711 is small, the noise entering the first muffler cavity is not easy to propagate out again from the first muffler hole 711, which can effectively suppress the medium and high frequency sound waves contained in the noise. In addition, the first muffler hole 711 can also effectively reduce the noise generated by Helmholtz resonance.

[0277] In the embodiment of the present application, the first silencer hole 711 is arranged in a manner that multiple first silencer holes 711 are evenly distributed around the central part of the front cover plate 710. It is also possible that the first silencer holes 711 are irregularly arranged around the central part of the front cover plate 710, and when the sound wave passes through the first silencer holes 711, each first silencer hole 711 can apply a sound-absorbing resistance individually, that is, each first silencer hole 711 can individually suppress noise, and multiple first silencer holes 711 work together to suppress noise. Furthermore, the axis of the first silencer hole 711 is parallel to the axis of the main body 10, so that the noise can be smoothly guided into the first silencer cavity through the first silencer hole 711.

[0278] Further, see Fig.36 In an achievable embodiment of the present application, the first air inlet 11 is provided with an air inlet grid 600, and a plurality of air holes 64 are evenly distributed around the central part of the air inlet grid 600, and each air hole 64 corresponds to at least one first silencer hole 711. The air holes 64 of the air inlet grid 600 are used to take in air and isolate larger foreign objects, and at the same time, the noise inside the hair dryer can also be transmitted to the outside through the air holes 64. The first silencer hole 711 is provided corresponding to the air holes 67, which can ensure that after the noise is transmitted from the air hole 91, it can smoothly enter the first silencer cavity through the first silencer hole 711. On the other hand, the purpose of preliminary silencing of noise is achieved through the structure of the first silencer hole 711.

[0279] In the embodiment of the present application, the arrangement of the first muffler holes 711 can be arranged in accordance with the shape of the ventilation holes 64. For example, Fig.36 One possible implementation method is that the vent hole 64 is an arc-shaped hole extending from the center of the air inlet grille 600 along an arc to the edge of the air inlet grille 600. Each vent hole 64 corresponds to a plurality of first silencer holes 711, and the plurality of first silencer holes 711 corresponding to the same vent hole 64 are arranged in sequence along the arc of the vent hole 64. The vent hole 64 is an arc-shaped hole, which can ensure the smooth passage of airflow on the one hand, and have a certain blocking effect on noise on the other hand. The noise will not directly pass through the air inlet grille 600, and the propagation path of the sound wave has certain bends, which helps to reduce noise. The plurality of first silencer holes 711 are arranged in sequence along the vent hole 64 to ensure that each first silencer hole 711 can correspond to the vent hole 64. The first silencer hole 711 is set corresponding to the vent hole 64, which can ensure that after the noise is transmitted from the vent hole 64, it can smoothly pass through the first silencer hole 711 into the first silencer cavity. On the other hand, the structure of the first silencer hole 711 can achieve the purpose of preliminary silencing of noise.

[0280] In order to further enhance the noise reduction effect of the front cover 710, in the embodiment of the present application, a muffler groove 712 is provided on the side of the front cover 710 facing the air inlet grille 600, corresponding to each vent hole 64, and at least one first muffler hole 711 is provided in each muffler groove 712. The muffler groove 712 can further reduce the sound waves. When the sound waves propagate into the muffler groove 712, a part of the sound energy is converted into heat energy and dissipated by friction during the reflection and diffraction process, thereby reducing the sound waves passing through the front cover 710. At the same time, the depth of the first muffler hole 711 can be changed by the muffler groove 712, thereby changing the frequency of noise reduction.

[0281] In the embodiment of the present application, the noise that needs to be reduced is the noise generated by the fan assembly 60 of the hair dryer. In order to carry out targeted noise reduction on the noise generated by the fan assembly 60, one achievable method is to determine the main frequency band of noise reduction by setting the corresponding aperture, hole depth and opening rate of the front cover plate 710 of the first silencer hole 711. When setting the parameters such as the aperture, hole depth and opening rate of the front cover plate 710, the settings can be made according to the actual measured results of the noise generated by the fan assembly 60 when the hair dryer is actually used. Alternatively, the same setting parameters can be used for the fan assembly 60 of the same model. In the embodiment of the present application, the range of the hole diameter of the first silencer hole 711 is 1.0 to 1.5 mm; the range of the hole depth of the first silencer hole 711 is 1.0 to 2.0 mm; the range of the opening rate of the first silencer hole 711 on the front cover plate 710 is 5% to 15%.

[0282] It should be noted that the above-mentioned parameters such as the hole diameter, hole depth and opening ratio of the front cover plate 710 are only illustrative. Those skilled in the art can set them according to different noise reduction requirements. The embodiments of the present application do not make specific limitations. At the same time, this does not constitute an improper limitation of the embodiments of the present application.

[0283] Continue to see Fig.33In order to further improve the silencing effect of the exposed component 700, in an achievable embodiment of the present application, a silencing cotton 730 is further provided in the first silencing cavity, and the silencing cotton 730 covers the plurality of first silencing holes 711. The silencing cotton 730 has a multi-microporous structure, through which the sound energy is rubbed in the pores of the silencing cotton and converted into heat energy and dissipated, so that the sound waves passing through the front cover plate 710 are weakened. The silencing cotton 730 is located between the front cover plate 710 and the rear cover plate 720. When the front cover plate 710 and the rear cover plate 720 are connected, a clamping structure is formed, and the silencing cotton 730 is fixed by the clamping structure. After the silencing cotton 730 is fixed, it can cover the plurality of first silencing holes 711. The silencing cotton 730 can absorb the sound wave energy in the noise and prevent the sound waves in the noise from resonating. At the same time, the silencing cotton 730 can also convert the sound energy into heat energy to achieve the purpose of silencing. The sound-absorbing cotton 730 and the first sound-absorbing hole 711 work together to reduce the overall noise of the hair dryer.

[0284] Further, see Fig.34 , Fig.35 and Fig.37 In the embodiment of the present application, a connection method of the exposed component 700 is that the central part of the front cover plate 710 has a connection hole 713 and a positioning groove 714. The side of the rear cover plate 720 facing the front cover plate 710 is provided with a connection column 721 and a positioning column 722, the connection column 721 is connected to the air inlet grille 600 through the connection hole 713, and the positioning column 722 is connected to the positioning groove 714. The connection column 721 and the air inlet grille 600 can be connected in a variety of connection methods, such as screw connection, clamping or magnetic connection. When the connection column 721 is connected to the air inlet grille 60, the screw, clamping part or magnetic connector passes through the connection hole 713 on the front cover plate 710 to complete the connection between the connection column 721 and the air inlet grille 600. The positioning column 722 and the positioning groove 714 can be connected in a variety of connection methods, such as screw connection, clamping or magnetic connection.

[0285] Further, see Fig.37 and Fig.38In order to achieve better noise reduction, in an achievable embodiment of the present application, a plurality of second silencer holes 66 are provided on the central portion of the air inlet grille 600, and the plurality of second silencer holes 66 and the front cover plate 710 form a second silencer cavity. A plurality of ventilation holes 64 are distributed around the plurality of second silencer holes 66. The plurality of second silencer holes 66 can be distributed in the central portion of the air inlet grille 600 in a predetermined arrangement, and the second silencer holes 66 can be used for air intake and silencer. Without affecting the air intake of the air inlet grille 600, the noise can be guided into the second silencer cavity through the second silencer holes 66, and silencer can be preliminarily achieved through the structure of the second silencer holes 66. The size of the second silencer hole 66 is relatively small, and it has a suppressive effect on the medium and high frequency sound waves contained in the noise. When the noise passes through the second silencer hole 66, especially when the medium and high frequency noise passes through the second silencer hole 66, the second silencer hole 66 will exert a certain silencing resistance on the sound waves. The sound energy of the medium and high frequency noise is converted into heat energy and dissipated by friction in the pores of the second silencer hole 66, so that the sound waves passing through the second silencer hole 66 are weakened. At the same time, due to the small size of the second silencer hole 66, the noise entering the second silencer cavity is not easy to be transmitted again from the second silencer hole 66, which can effectively suppress the medium and high frequency sound waves contained in the noise. The noise propagated from the hair dryer is partially reduced by the second silencer hole 66 and the second silencer cavity, and part of the noise is reduced by the first silencer hole 711 and the first silencer cavity. The double silencing makes most of the noise propagated from the hair dryer absorbed and consumed, thereby reducing the overall noise of the hair dryer.

[0286] In the embodiment of the present application, the second silencer holes 66 may be arranged in a predetermined arrangement in the center of the air inlet grille 600 in addition to a plurality of second silencer holes 66 being arranged in a predetermined arrangement. Alternatively, the second silencer holes 66 may be arranged irregularly in the center of the air inlet grille 600. When the sound waves pass through the second silencer holes 66, each second silencer hole 66 may exert a sound-absorbing resistance individually, that is, each second silencer hole 66 may suppress noise individually, and the plurality of second silencer holes 66 may work together to suppress noise.

[0287] In the embodiment of the present application, the noise generated by the fan assembly 60 of the hair dryer needs to be reduced. In order to reduce the noise generated by the fan assembly 60 in a targeted manner, one achievable method is to determine the main frequency band of noise reduction by setting the corresponding aperture, hole depth and opening rate of the air inlet grid 600 of the second muffler hole 66. The opening rate here refers to the opening rate of the second muffler hole 66. When setting the parameters such as the aperture, hole depth and opening rate of the air inlet grid 600, the setting can be based on the actual measurement results of the noise generated by the fan assembly 60 when the hair dryer is actually used. Alternatively, the fan assembly 60 of the same model can use the same setting parameters. In the embodiment of the present application, the range of the hole diameter of the second muffler hole 66 is 1.0 to 1.5 mm; the range of the hole depth of the second muffler hole 66 is 1.0 to 2.0 mm; the range of the opening rate of the second muffler hole 66 on the air inlet grid 600 is 5% to 15%.

[0288] It should be noted that the above-mentioned parameters such as the aperture, hole depth and opening ratio of the air inlet grille 600 are only for illustration. Those skilled in the art may set them according to different noise reduction requirements. The embodiments of the present application do not make specific limitations. At the same time, this does not constitute an improper limitation of the embodiments of the present application.

[0289] The technical solution adopted in this application is described below in combination with specific application scenarios to help understanding. In the following application scenarios, a hair dryer is taken as an example as a handheld hair dryer.

[0290] Application Scenario 14

[0291] When the hair dryer is working, the external airflow flows through the gap between the front cover and the air inlet surface and enters the air flow channel. The airflow does not enter the air flow channel directly through the air inlet surface, but enters the air flow channel from the edge of the front cover. The air flow inlet path has certain bends, which helps to reduce noise.

[0292] At the same time, part of the noise transmitted to the rear of the hair dryer is guided into the first silencer cavity formed by the front cover and the rear cover through the first silencer hole. The first silencer hole can initially reduce the noise. The first silencer cavity can effectively absorb the noise transmitted from the hair dryer, especially the medium and high frequency noise, to reduce the overall noise of the hair dryer and achieve the purpose of noise reduction. It does not affect the performance while improving the product quality and user comfort. After setting the first silencer hole and the first silencer cavity, the sound power of the hair dryer is reduced by more than 0.4dB, and the sound pressure level at the rear is reduced by more than 1.5dB.

[0293] Application Scenario 15

[0294] When the hair dryer is working, the external airflow flows through the gap between the front cover and the air inlet surface and enters the air flow channel. The airflow does not enter the air flow channel directly through the air inlet surface, but enters the air flow channel from the edge of the front cover. The air flow inlet path has certain bends, which helps to reduce noise.

[0295] At the same time, part of the noise transmitted to the rear by the hair dryer is guided through the first silencer hole into the first silencer cavity formed by the front cover and the rear cover, and silencer cotton is arranged in the silencer cavity. The first silencer hole can initially reduce the noise, and the first silencer cavity further absorbs the noise through the silencer cotton. The silencer cotton has a multi-microporous structure. Through the microporous structure, the sound energy is converted into heat energy and dissipated by friction in the pores of the silencer cotton, so that the sound waves passing through the front cover are weakened, thereby achieving the purpose of noise reduction. The first silencer cavity can effectively absorb the noise transmitted from the hair dryer, especially the medium and high frequency noise, to reduce the overall noise of the hair dryer, without affecting the performance while improving the product quality and improving the user comfort.

[0296] Application Scenario 16

[0297] When the hair dryer is working, the external airflow flows through the gap between the front cover and the air inlet surface and enters the air flow channel. The airflow does not enter the air flow channel directly through the air inlet surface, but enters the air flow channel from the edge of the front cover. The air flow inlet path has certain bends, which helps to reduce noise.

[0298] At the same time, part of the noise propagated to the rear by the hair dryer is reduced through the second silencer hole and the second silencer cavity. The second silencer hole is relatively small in size and has a suppressive effect on the medium and high frequency sound waves contained in the noise. When the noise passes through the second silencer hole, especially the medium and high frequency noise passes through the second silencer hole, the second silencer hole will exert a certain silencer resistance on the sound waves. The sound energy of the medium and high frequency noise is converted into heat energy and dissipated by friction in the pores of the second silencer hole, thereby weakening the sound waves passing through the second silencer hole.

[0299] Some noise is also guided into the first silencer cavity formed by the front cover and the rear cover through the first silencer hole, and silencer cotton is arranged in the silencer cavity. The first silencer hole can initially reduce the noise. The size of the first silencer hole is small, and it has a suppressive effect on medium and high frequency sound waves. When the noise passes through the first silencer hole, especially when the medium and high frequency noise passes through the first silencer hole, the first silencer hole will exert a certain silencing resistance on the sound wave. The sound energy of the medium and high frequency noise is converted into heat energy and dissipated by friction in the pores of the first silencer hole, so that the sound waves passing through the first silencer hole are weakened. The first silencer cavity further reduces the noise through silencer cotton.

[0300] The second silencer hole and the second silencer cavity are combined with the first silencer hole and the first silencer cavity to form double silencers, so that most of the noise transmitted from the hair dryer is absorbed and consumed, thereby reducing the overall noise of the hair dryer.

[0301] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hair dryer, characterized in that: include: A main body, the main body comprising a shell, the shell having a first air inlet and a first air outlet; A first connecting member, the first connecting member is arranged at the first air outlet, and the first connecting member is used for magnetic connection with the detachable member; as well as a positioning structure connected and fixed to the first connecting member, wherein a gap is provided between the positioning structure and the housing, and the gap forms the first air outlet; The positioning structure has a recessed portion recessed toward the interior of the housing, and the first connecting member is arranged in the recessed portion.

2. The hair dryer according to claim 1, characterized in that: The shell extends longitudinally, the first air inlet is located at the front end of the shell, the first air outlet is located at the rear end of the shell, and the first air inlet and the first air outlet are located on the same horizontal plane.

3. The hair dryer according to claim 1, characterized in that: The first air outlet is an annular structure, and the first connecting member is arranged radially inside the annular structure.

4. The hair dryer according to claim 1, characterized in that: A matching structure connected to the first connecting member is disposed in the recessed portion; the first connecting member is located in the recessed portion and fixed on the matching structure.

5. The hair dryer according to claim 4, characterized in that: The matching structure is a first step structure; The first connecting member is provided with a second step structure used in conjunction with the first step structure; The first step structure is engaged with the second step structure.

6. The hair dryer according to claim 1, characterized in that: The positioning structure includes a first positioning member and a second positioning member; The first positioning member has the recessed portion recessed toward the interior of the housing; The second positioning member is received in the recessed portion and connected to the first positioning member so as to clamp and fix the first connecting member between the first positioning member and the second positioning member.

7. The hair dryer according to claim 6, characterized in that: A positioning portion is provided at the bottom of the recessed portion; The second positioning member includes a fixing plate and a connecting column disposed on the fixing plate, the connecting column is connected to the positioning portion, and the fixing plate and the first positioning member form a clamping structure to clamp and fix the first connecting member.

8. The hair dryer according to claim 7, characterized in that: The positioning portion is provided with a positioning groove, and the groove wall of the positioning groove is provided with a limiting notch; The connecting column is provided with a limiting strip used in conjunction with the limiting notch; The connecting column extends into the positioning groove and is connected to the positioning portion; The limiting strip extends into the limiting notch to prevent the second positioning member from rotating in the radial direction.

9. The hair dryer according to claim 1, characterized in that: The detachable part includes a nozzle.

10. A hair dryer, characterized in that: include: A main body, the main body includes a shell, the shell has a first air inlet and a first air outlet, a first connecting member is provided at the first air outlet, the first connecting member is connected and fixed with a positioning structure, a gap is provided between the positioning structure and the shell, the gap forms the first air outlet, the positioning structure has a recessed portion recessed toward the inside of the shell, and the first connecting member is provided in the recessed portion; A detachable body, wherein the detachable body has a second air inlet and a second air outlet, and a second connecting member is disposed at the second air inlet; The second connecting member is magnetically connected to the first connecting member to connect the detachable body to the main body and penetrate the second air inlet and the first air outlet.

11. The hair dryer according to claim 10, characterized in that: The shell extends longitudinally, the first air inlet is located at the front end of the shell, the first air outlet is located at the rear end of the shell, and the first air inlet and the first air outlet are located on the same horizontal plane.

12. The hair dryer according to claim 10, characterized in that: The first air outlet is an annular structure, and the first connecting member is arranged radially inside the annular structure.

13. The hair dryer according to claim 10, characterized in that: A matching structure connected to the first connecting member is disposed in the recessed portion; the first connecting member is located in the recessed portion and fixed on the matching structure.

14. The hair dryer according to claim 13, characterized in that The matching structure is a first step structure; The first connecting member is provided with a second step structure used in conjunction with the first step structure; The first step structure is engaged with the second step structure.

15. The hair dryer according to claim 10, characterized in that: The positioning structure includes a first positioning member and a second positioning member; The first positioning member has the recessed portion recessed toward the interior of the housing; The second positioning member is received in the recessed portion and connected to the first positioning member so as to clamp and fix the first connecting member between the first positioning member and the second positioning member.

16. The hair dryer according to claim 15, characterized in that A positioning portion is provided at the bottom of the recessed portion; The second positioning member includes a fixing plate and a connecting column disposed on the fixing plate, the connecting column is connected to the positioning portion, and the fixing plate and the first positioning member form a clamping structure to clamp and fix the first connecting member.

17. The hair dryer according to claim 16, characterized in that The positioning portion is provided with a positioning groove, and the groove wall of the positioning groove is provided with a limiting notch; The connecting column is provided with a limiting strip used in conjunction with the limiting notch; The connecting column extends into the positioning groove and is connected to the positioning portion; The limiting strip extends into the limiting notch to prevent the second positioning member from rotating in the radial direction.

18. The hair dryer according to claim 10, characterized in that: The second air inlet is a ring-shaped structure; A connecting protrusion is arranged at the radial inner side of the annular structure, and the second connecting member is arranged on the connecting protrusion.

19. The hair dryer according to claim 18, characterized in that The second connecting members are multiple and are evenly arranged around the central axis of the connecting protrusion; or, The second connecting member is an annular structure.

20. The hair dryer according to claim 18, characterized in that The connecting protrusion is provided with a fixing groove, and the second connecting member is fixedly connected in the fixing groove.

21. The hair dryer according to claim 10, characterized in that The detachable body includes a nozzle.

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